Number
21,221
21,221 is a prime, odd.
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 8
- Digital root
- 8
- Palindrome
- No
- Divisor count
- 2
- σ(n) — sum of divisors
- 21,222
Primality
21,221 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Aliquot sum (sum of proper divisors):
1
First multiples
Representations
- In words
- twenty-one thousand two hundred twenty-one
- Ordinal
- 21221st
- Binary
- 101001011100101
- Octal
- 51345
- Hexadecimal
- 52E5
Also seen as
Prime neighborhood
Unicode codepoint
勥
U+52E5
Other letter (Lo)
UTF-8 encoding: E5 8B A5 (3 bytes).
Hex color
#0052E5
RGB(0, 82, 229)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.82.229.