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22021133 = 191159007
BaseRepresentation
bin101010000000…
…0010000001101
31112102210022112
41110000100031
521114134013
62103553405
7355114361
oct124002015
945383275
1022021133
1111480892
12745b865
134740374
142cd32a1
151deeba8
hex150040d

22021133 has 4 divisors (see below), whose sum is σ = 23180160. Its totient is φ = 20862108.

The previous prime is 22021123. The next prime is 22021151. The reversal of 22021133 is 33112022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22021133 - 28 = 22020877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579485 + ... + 579522.

It is an arithmetic number, because the mean of its divisors is an integer number (5795040).

Almost surely, 222021133 is an apocalyptic number.

It is an amenable number.

22021133 is a deficient number, since it is larger than the sum of its proper divisors (1159027).

22021133 is a wasteful number, since it uses less digits than its factorization.

22021133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159026.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 22021133 is about 4692.6680044512. The cubic root of 22021133 is about 280.2936248029.

Adding to 22021133 its reverse (33112022), we get a palindrome (55133155).

The spelling of 22021133 in words is "twenty-two million, twenty-one thousand, one hundred thirty-three".

Divisors: 1 19 1159007 22021133