Properties of the Number 12213

Twelve Thousand Two Hundred Thirteen

Basics

Value: 12212 → 12213 → 12214

Parity: odd

Prime: No

Previous Prime: 12211

Next Prime: 12227

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 23 × 59

Divisors: 1, 3, 9, 23, 59, 69, 177, 207, 531, 1357

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10111110110101

Octal: 27665

Duodecimal: 7099

Hexadecimal: 2fb5

Square: 149157369

Square Root: 110.51244273836318

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

a(n) = ∑_d∣3 φ(d)*n^3/d. A54602

Numbers k such that 2^k - k is prime. A48744

Number of partitions of n into 7 distinct and relatively prime parts. A339672

Denominators of continued fraction convergents to sqrt(548). A42049

Numbers k such that 6·p(k)*p(k+1)*p(k+2)*p(k+3)*p(k+4)*p(k+5)-1 and 6·p(k)*p(k+1)*p(k+2)*p(k+3)*p(k+4)*p(k+5)+1 are twin primes with p(h) = h-th prime. A129311

Magnetic Tower of Hanoi, number of moves of disk number k, generated by a certain algorithm, yielding a "forward moving" non-optimal solution of the [NEUTRAL ; NEUTRAL ; NEUTRAL] pre-colored puzzle. A183122

Numbers k such that 23·k+1 is a square. A219393

Positive numbers having the same set of digits in base 6 and base 10. A37437

Denominators of continued fraction convergents to sqrt(533). A42019

Expansion of ∏_k>=1 1/(1 - x^2·k - x^3·k). A276519