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Number 221 (two hundred twenty-one) is an odd three-digits composite number and natural number following 220 and preceding 222.

Properties of the number 221

Cardinaltwo hundred twenty-one
two hundred twenty-one
Number of digits3
Sum of digits5
Product of digits4
Number parityOdd
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Prime Factorization of 221

Prime factorization13 x 17
Prime factors13, 17
Number of distinct prime factors ω(n)2
Total number of prime factors Ω(n)2
Sum of prime factors30
Product of prime factors221
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Divisors of 221

List of proper divisors 1, 13, 17
List of all dividers1, 13, 17, 221
Number of divisors d(n)4
Sum of all divisors σ(n)252
Aliquot sum 31
221 is a deficient number , since it is larger than the sum of its proper divisors (31). Its deficiency is 190.
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Prime numbers

Is 221 a prime number?No
Is 221 a semiprime number?Yes
Is 221 a Chen prime number?No
Is 221 a Mersenne prime number?No
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Is 221 a Catalan number?No
Is 221 a Fibonacci number?No
Is 221 a Idoneal number?No
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Number theory

Number theory is a branch of pure mathematics devoted primarily to the study of the integers and integer-valued functions.
221 is not a Happy number
221 is not a Humble number
221 is not a Münchhausen number
221 is not a Perfect number
221 is not a Perfect square
221 is not a Palindrome
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Numeric Bases of 221

In mathematics, a base or radix of a numeral system is the number of unique digits, including zero, used to represent numbers in that system.
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Mathematical operations

Mathematical operations are actions that are performed on numbers or mathematical expressions to find a numerical result.
Square of 221 (n2)48841
Cube of 221 (n3)10793861
Square root of 22114.866068747319
Natural Logarithm (ln) of 2215.3981627015178
Decimal Logarithm (log) of 2212.3443922736851
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Trigonometry is the study of the relationship between the angles and sides of a triangle.
Sine of 2210.88593879787876
Cosecant of 2211.1287461418264
Cosine of 2210.46380216301042
Secant of 2212.1560917127019
Tangent of 2211.9101653000675
Cotangent of 2210.52351490206877
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Number parity

Parity is the property of an integer of whether it is even or odd.

Is 221 an Even Number?


Is 221 an Odd Number?

Yes, the number 221 is an odd number.
Total number of all odd numbers from 1 to 221 is 111
Sum of all the odd numbers from 1 to 221 are 12321
The sum of all odd numbers is a perfect square: 12321 = 111
An odd number is any integer (a whole number) that cannot be divided by 2 evenly. Odd numbers are the opposite of even numbers.
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Ban number

In recreational mathematics, a ban number is a number that does not contain a particular letter when spelled out in English; in other words, the letter is "banned".
The spelling of 221 in words is "two hundred twenty-one", meaning that:
221 is an aban number (a number without the letter a)
221 is not an eban number (as it contains the letter e)
221 is an iban number (a number without the letter i)
221 is not an oban number (as it contains the letter o)
221 is not a tban number (as it contains the letter t)
221 is not an uban number (as it contains the letter u)
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Numeral systems

How to write 221 in other number systems?
Bengali numerals২২১
Eastern Arabic numerals٢٢١
Hieroglyphs numeralsused in Ancient Egypt𓍣𓎇𓏺
Khmer numerals២២១
Japanese numerals二百二十一
Roman numeralsCCXXI
Thai numerals๒๒๑
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How do you say 221 in 38 different languages?
Arabicمائتان و واحد و عشرون
Croatiandvjesto dvadeset i jedan
Czechdvě stě dvacet jeden
Danish to hundrede en og tyve
Estonianalafa eve blaeve vɔ ɖekɛ
Filipinodalawáng daán at dalawáng pû’t isá
Frenchdeux cent vingt et un
Greekδιακόσια είκοσι ένα
Hebrewמאתיים עשרים ואחת
Hindiदो सौ इक्कीस
Icelandictvö­hundrað og tuttugu og einn
Indonesiandua ratus dua puluh satu
Latviandivsimt divdesmit viens
Lithuaniandu šimtai dvidešimt vienas
Norwegianto hundre og tjue­én
Persianدویست و بیست و یک
Polishdwieście dwadzieścia jeden
Portugueseduzentos e vinte e um
Romaniandouă sute douăzeci şi unu
Russianдвести двадцать один
Serbianдвеста двадесет и један
Slovakdve­sto dvadsať­jeden
Slovenedvjesto dvaset ena
Spanish doscientos veintiuno
Swahilimia mbili na ishirini na moja
Turkishiki yüz yirmi bir
Ukrainianдвісті двадцять один
Vietnamesehai trăm hai mươi mốt
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Number 221 reversed122
ASCII Code221Ý
Unicode CharacterU+00DDÝ
Hexadecimal color (shorthand)#222211
Unix TimestampThu, 01 Jan 1970 00:03:41 +0000
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