22521633612522 has 128 divisors (see below), whose sum is σ = 52593259530240. Its totient is φ = 6362082144000.

The previous prime is 22521633612479. The next prime is 22521633612529.

22521633612522 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (22521633612529) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8977497 + ... + 11208867.

It is an arithmetic number, because the mean of its divisors is an integer number (410884840080).

Almost surely, 2^{22521633612522} is an apocalyptic number.

22521633612522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 22521633612522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26296629765120).

22521633612522 is an abundant number, since it is smaller than the sum of its proper divisors (30071625917718).

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

22521633612522 is a wasteful number, since it uses less digits than its factorization.

22521633612522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231580.

The product of its digits is 518400, while the sum is 42.

It can be divided in two parts, 2252163 and 3612522, that added together give a palindrome (5864685).

The spelling of 22521633612522 in words is "twenty-two trillion, five hundred twenty-one billion, six hundred thirty-three million, six hundred twelve thousand, five hundred twenty-two".