22521812522 has 24 divisors (see below), whose sum is σ = 37493627808. Its totient is φ = 10137786120.

The previous prime is 22521812513. The next prime is 22521812539.

22521812522 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×22521812522² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 426848 + ... + 476699.

It is an arithmetic number, because the mean of its divisors is an integer number (1562234492).

Almost surely, 2^22521812522 is an apocalyptic number.

22521812522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22521812522 is a deficient number, since it is larger than the sum of its proper divisors (14971815286).

22521812522 is a wasteful number, since it uses less digits than its factorization.

22521812522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903674 (or 903663 counting only the distinct ones).

The product of its digits is 12800, while the sum is 32.

The spelling of 22521812522 in words is "twenty-two billion, five hundred twenty-one million, eight hundred twelve thousand, five hundred twenty-two".