22521012522 has 32 divisors (see below), whose sum is σ = 45516496320. Its totient is φ = 7428019200.

The previous prime is 22521012509. The next prime is 22521012551.

22521012522 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 22521012492 and 22521012501.

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, 1033354 + ... + 1054922.

It is an arithmetic number, because the mean of its divisors is an integer number (1422390510).

Almost surely, 2^22521012522 is an apocalyptic number.

22521012522 is an abundant number, since it is smaller than the sum of its proper divisors (22995483798).

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

22521012522 is a wasteful number, since it uses less digits than its factorization.

22521012522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23398.

The product of its (nonzero) digits is 1600, while the sum is 24.

It can be divided in two parts, 225210 and 12522, that added together give a palindrome (237732).

The spelling of 22521012522 in words is "twenty-two billion, five hundred twenty-one million, twelve thousand, five hundred twenty-two".