Properties of the Number 21202

Twenty-One Thousand Two Hundred Two

Basics

Value: 21201 → 21202 → 21203

Parity: even

Prime: No

Previous Prime: 21193

Next Prime: 21211

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 2 × 10601

Divisors: 1, 2, 10601, 21202

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101001011010010

Octal: 51322

Duodecimal: 1032A

Hexadecimal: 52d2

Square: 449524804

Square Root: 145.60906565183365

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

n written in fractional base 3/2. A24629

Triangular array read by rows: T(n,k) is the number of n-permutations that have exactly k distinct cycle lengths. A218868

List of codewords in binary lexicode with Hamming distance 7 written as decimal numbers. A75937

Numbers with digits in {0,1,2} such that every other digit is strictly less than its neighbors. A306105

Number of permutations of length n with 2 cycle lengths. A5772

a(n) = 13·n² - 16·n + 5. A202141

The index of the first of two consecutive positive triangular numbers (A000217) the sum of which is equal to the sum of thirteen consecutive positive triangular numbers. A262492

Numbers that require three steps to collapse to a single digit in base 4 (written in base 4). A253953

Fibonacci numbers written in base 4. A4687

Ternary emirpimes. A119684