22521412155 has 96 divisors (see below), whose sum is σ = 40699895040. Its totient is φ = 10546030080.

The previous prime is 22521412073. The next prime is 22521412157. The reversal of 22521412155 is 55121412522.

It is not a de Polignac number, because 22521412155 - 2⁷ = 22521412027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22521412157) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 40433137 + ... + 40433693.

It is an arithmetic number, because the mean of its divisors is an integer number (423957240).

Almost surely, 2^22521412155 is an apocalyptic number.

22521412155 is a deficient number, since it is larger than the sum of its proper divisors (18178482885).

22521412155 is a wasteful number, since it uses less digits than its factorization.

22521412155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829 (or 792 counting only the distinct ones).

The product of its digits is 8000, while the sum is 30.

Adding to 22521412155 its reverse (55121412522), we get a palindrome (77642824677).

The spelling of 22521412155 in words is "twenty-two billion, five hundred twenty-one million, four hundred twelve thousand, one hundred fifty-five".