22969221 has 16 divisors (see below), whose sum is σ = 33542208. Its totient is φ = 13865600.

The previous prime is 22969217. The next prime is 22969273. The reversal of 22969221 is 12296922.

It is a cyclic number.

It is not a de Polignac number, because 22969221 - 2² = 22969217 is a prime.

It is a super-2 number, since 2×22969221² = 1055170226693682, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22969201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8035 + ... + 10511.

It is an arithmetic number, because the mean of its divisors is an integer number (2096388).

Almost surely, 2^22969221 is an apocalyptic number.

It is an amenable number.

22969221 is a deficient number, since it is larger than the sum of its proper divisors (10572987).

22969221 is a wasteful number, since it uses less digits than its factorization.

22969221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772.

The product of its digits is 7776, while the sum is 33.

The square root of 22969221 is about 4792.6215164563. The cubic root of 22969221 is about 284.2597842806.

The spelling of 22969221 in words is "twenty-two million, nine hundred sixty-nine thousand, two hundred twenty-one".