Properties of the Number 99221

Ninety-Nine Thousand Two Hundred Twenty-One

Basics

Value: 99220 → 99221 → 99222

Parity: odd

Prime: No

Previous Prime: 99191

Next Prime: 99223

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 313 × 317

Divisors: 1, 313, 317, 99221

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11000001110010101

Octal: 301625

Duodecimal: 49505

Hexadecimal: 18395

Square: 9844806841

Square Root: 314.9936507296615

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) = prime(2·n-1)*prime(2·n). A89581

Product of the n-th cousin prime pair. A143206

Numbers k such that exactly one d, 2 <= d <= k/2, exists which divides binomial(k-d-1, d-1) and is not coprime to k. A178071

Semiprimes whose prime factors are of equal binary length and which differ from each other in one bit position only. A261073

Numbers k such that k divides ∑_j=0..k j^k-j. A341437

Numbers that are both a sum and a product of two or more consecutive primes. A254859

a(n) = 100·n² + 100·n + 21. A152161

Semiprimes p·q for which p and q are successive primes and their binary representations differ from each other in one bit position only. A261080

Brilliant numbers such that when they are concatenated with their 10's complement, which also must be brilliant, the result is a prime. A84629

Decimal expansion of Li₇(1/2). A99221