number.wiki
Number

13,121

13,121 is a prime, odd.

Deficient Number Prime Sexy Prime Squarefree

Properties

Parity
Odd
Digit count
5
Digit sum
8
Digital root
8
Palindrome
No
Divisor count
2
σ(n) — sum of divisors
13,122

Primality

13,121 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 13121
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 13,121)
1 × 13121
First multiples
13,121 · 26,242 · 39,363 · 52,484 · 65,605 · 78,726 · 91,847 · 104,968 · 118,089 · 131,210

Representations

In words
thirteen thousand one hundred twenty-one
Ordinal
13121st
Binary
11001101000001
Octal
31501
Hexadecimal
3341

Also seen as

Prime neighborhood

Adjacent primes:

  • Previous prime: 13,109 (gap of 12)
  • Next prime: 13,127 (gap of 6)

Pair status: sexy with 13127.

Unicode codepoint
U+3341
Other symbol (So)

UTF-8 encoding: E3 8D 81 (3 bytes).

Hex color
#003341
RGB(0, 51, 65)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.51.65.