Properties of the Number 12211

Twelve Thousand Two Hundred Eleven

Basics

Value: 12210 → 12211 → 12212

Parity: odd

Prime: Yes

Previous Prime: 12203

Next Prime: 12227

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 12211

Divisors: 1, 12211

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10111110110011

Octal: 27663

Duodecimal: 7097

Hexadecimal: 2fb3

Square: 149108521

Square Root: 110.50339361304701

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

Primes having only {1, 2, 9} as digits. A385776

Primes whose decimal representation also represents a prime in base 3. A89981

Primes of the form 1 + n + n² + n³ + ... + n^k, n > 1, k > 1. A85104

Primes of form k² + k + 1. A2383

Smallest n-digit prime containing only digits 1 or 2 or -1 if no such prime exists. A36229

Primes having only {0, 1, 2} as digits. A36953

Discriminants of imaginary quadratic fields with class number 25 (negated). A56987

Values of n such that L(10) and N(10) are both prime, where L(k) = (n²+n+1)*2^2·k + (2·n+1)*2^k + 1, N(k) = (n²+n+1)*2^k + n. A227448

Variant of Sylvester's sequence: a(n+1) = a(n)² - a(n) + 1, with a(1) = 11. A144784

Primes that contain digits 1 and 2 only. A20450