Properties of the Number -9221

Two Hundred Twenty-One

Basics

Value: -9222 → -9221 → -9220

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 9221

Divisors: 1, 9221

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10010000000101

Octal: -22005

Duodecimal: -5405

Hexadecimal: -2405

Square: 85026841

Square Root: 96.0260381354974

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

Values of n such that L(6) and N(6) 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. A226926

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

Number of partitions of n with equal number of even and odd parts. A45931

Numbers n such that n, 2n+1, and 4n+3 all prime. A7700

Number of integer partitions of n such that every set of distinct parts has a different sum. A325862

Primes with first digit 9. A45715

Initial primes of Cunningham chains of first type with length exactly 3. Primes in A059453 that survive as primes just two "2p+1 iterations", forming chains of exactly 3 terms. A59762

Number of partitions of n such that the number of odd parts is not a part and the number of even parts is not a part. A240579

Primes of the form k² + 5. A56905

Primes with either no internal digits or all internal digits are 2. A69677