22815123120 has 80 divisors (see below), whose sum is σ = 78585431520. Its totient is φ = 6084032256.

The previous prime is 22815123119. The next prime is 22815123157. The reversal of 22815123120 is 2132151822.

22815123120 is a `hidden beast` number, since 2 + 28 + 1 + 512 + 3 + 120 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5279119 + ... + 5283438.

It is an arithmetic number, because the mean of its divisors is an integer number (982317894).

Almost surely, 2^22815123120 is an apocalyptic number.

22815123120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22815123120 is an abundant number, since it is smaller than the sum of its proper divisors (55770308400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22815123120 is a wasteful number, since it uses less digits than its factorization.

22815123120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10562579 (or 10562567 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 22815123120 its reverse (2132151822), we get a palindrome (24947274942).

The spelling of 22815123120 in words is "twenty-two billion, eight hundred fifteen million, one hundred twenty-three thousand, one hundred twenty".