22979121 has 16 divisors (see below), whose sum is σ = 35391168. Its totient is φ = 13107200.

The previous prime is 22979119. The next prime is 22979167. The reversal of 22979121 is 12197922.

It is a 5-Lehmer number, since φ(22979121) divides (22979121-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 22979121 - 2¹ = 22979119 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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

It is not an unprimeable number, because it can be changed into a prime (22979171) 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, 19920 + ... + 21041.

It is an arithmetic number, because the mean of its divisors is an integer number (2211948).

Almost surely, 2^22979121 is an apocalyptic number.

It is an amenable number.

22979121 is a deficient number, since it is larger than the sum of its proper divisors (12412047).

22979121 is a wasteful number, since it uses less digits than its factorization.

22979121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40992.

The product of its digits is 4536, while the sum is 33.

The square root of 22979121 is about 4793.6542428506. The cubic root of 22979121 is about 284.3006181665.

The spelling of 22979121 in words is "twenty-two million, nine hundred seventy-nine thousand, one hundred twenty-one".