ℕ atory
Play Now

Properties of the Number 12212

Twelve Thousand Two Hundred Twelve

Basics

Value: 12211 → 12212 → 12213

Parity: even

Prime: No

Previous Prime: 12211

Next Prime: 12227

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 2 2 × 43 × 71

Divisors: 1, 2, 4, 43, 71, 86, 142, 172, 284, 3053

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 10111110110100

Octal: 27664

Duodecimal: 7098

Hexadecimal: 2fb4

Square: 149132944

Square Root: 110.50791826833044

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Positive numbers for which the sum of digits equals the product of digits. A34710
Coefficients of monic irreducible polynomials over GF(3) listed in lexicographic order. A58944
Coefficients of monic primitive irreducible polynomials over GF(3) listed in lexicographic order. A58949
List of primitive words over the alphabet {1,2}. A213969
Take n-th string over {1,2} in lexicographic order and apply the Post tag system described in A284116 (but adapted to the alphabet {1,2}) just once. A289673
T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero. A302150
The Wythoff representation of n: an alternative way of presenting A189921. A317208
Consider the Post tag system described in A284116 (but adapted to the alphabet {1,2}) ; sequence lists the words that terminate in the empty word. A289675
a(n) is formed by concatenating a(n-2) and a(n-1), with a(0) = 1, a(1) = 2. A8352
Parse the Kolakoski sequence A000002 into distinct phrases 1, 2, 21, 12, 122, 1221, 121, 12212, 11, ...; a(n) = length of n-th phrase. A187199