Properties of the Number -2211

Two Hundred Eleven

Basics

Value: -2212 → -2211 → -2210

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 6

Digital Root: 6

Palindrome: No

Factorization: 3 × 11 × 67

Divisors: 1, 3, 11, 33, 67, 201, 737, 2211

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100010100011

Octal: -4243

Duodecimal: -1343

Hexadecimal: -8a3

Square: 4888521

Square Root: 47.02127178203499

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

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 353", based on the 5-celled von Neumann neighborhood. A271308

a(n) = 9ⁿ-8ⁿ-7ⁿ-6ⁿ-5ⁿ-4ⁿ-3ⁿ-2ⁿ-1. A147996

Second hexagonal numbers: a(n) = n*(2·n + 1). A14105

Triangular numbers composed of digits {0,1,2}. A119033

Numbers that contain only 1's and 2's. Nonempty binary strings of length n in lexicographic order. A7931

a(n) = n² + 2. A59100

Doubly triangular numbers: a(n) = n*(n+1)*(n²+n+2)/8. A2817

Start with 1; for n>1, replace n with the concatenation of its prime factors in increasing order. A37276

Representation of n in base of Catalan numbers (a classic greedy version). A14418

Multiples of 11 containing an 11 in their decimal representation. A121031