22523121 has 24 divisors (see below), whose sum is σ = 33671040. Its totient is φ = 14497056.

The previous prime is 22523119. The next prime is 22523173. The reversal of 22523121 is 12132522.

22523121 is a `hidden beast` number, since 22 + 523 + 121 = 666.

It is not a de Polignac number, because 22523121 - 2¹ = 22523119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22523094 and 22523103.

It is not an unprimeable number, because it can be changed into a prime (22523321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79446 + ... + 79728.

It is an arithmetic number, because the mean of its divisors is an integer number (1402960).

Almost surely, 2^22523121 is an apocalyptic number.

It is an amenable number.

22523121 is a deficient number, since it is larger than the sum of its proper divisors (11147919).

22523121 is a wasteful number, since it uses less digits than its factorization.

22523121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565 (or 562 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 22523121 is about 4745.8530318584. The cubic root of 22523121 is about 282.4074764223.

Adding to 22523121 its reverse (12132522), we get a palindrome (34655643).

The spelling of 22523121 in words is "twenty-two million, five hundred twenty-three thousand, one hundred twenty-one".