Properties of the Number 20212

Twenty Thousand Two Hundred Twelve

Basics

Value: 20211 → 20212 → 20213

Parity: even

Prime: No

Previous Prime: 20201

Next Prime: 20219

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 31 × 163

Divisors: 1, 2, 4, 31, 62, 124, 163, 326, 652, 5053

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 100111011110100

Octal: 47364

Duodecimal: B844

Hexadecimal: 4ef4

Square: 408524944

Square Root: 142.16891362038328

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

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

Number of convex quadrilaterals, distinct up to congruence, on an n X n grid (or geoboard). A181944

Put the natural numbers together without spaces and read them five at a time advancing one space each time. A193493

Numbers n such that n through n+5 have the same number of distinct prime factors. A45934

Numbers n such that n through n+6 are divisible by the same number of distinct primes. A45935

Nonnegative integers k such that the Euclidean distance between the vector of proportions of the digits 0-9 in 2^k and the uniform distribution (1/10, ..., 1/10) sets a new minimum. A393331

Nonnegative integers k such that the Manhattan distance between the vector of proportions of the digits 0-9 in 2^k and the uniform distribution (1/10, ..., 1/10) sets a new minimum. A393332

Ternary emirpimes. A119684

Numbers 3·n + 2 written in base 3. A190642

a(n) = floor(volume of 4-sphere of radius n). A210519