Properties of the Number 22121

Twenty-Two Thousand One Hundred Twenty-One

Basics

Value: 22120 → 22121 → 22122

Parity: odd

Prime: No

Previous Prime: 22111

Next Prime: 22123

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 11 × 2011

Divisors: 1, 11, 2011, 22121

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101011001101001

Octal: 53151

Duodecimal: 10975

Hexadecimal: 5669

Square: 489338641

Square Root: 148.73130134574902

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

Number of integer compositions of n whose leaders of weakly increasing runs are themselves weakly increasing. A374635

List of co-Lyndon words on {1,2} sorted first by length and then lexicographically. A329318

a(n) = ∑_k=1..n k*σ(k). A143128

Pascal-(1,7,1) array. A81582

List of primitive words over the alphabet {1,2}. A213969

The number of P-positions in the game of Nim with up to 4 piles, allowing for piles of zero, such that the number of objects in each pile does not exceed n. A241522

Unique representation of nonnegative numbers by iterated tribonacci A, B and C sequences. A316713

Structured disdyakis triacontahedral numbers (vertex structure 7). A100159

Shortest (x+1,2x)-code of n. A233135

List of subwords (or factors) of the Kolakoski sequence (A000002). A376677