22521612522 has 8 divisors (see below), whose sum is σ = 45043225056. Its totient is φ = 7507204172.

The previous prime is 22521612521. The next prime is 22521612527.

22521612522 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

22521612522 is an admirable number.

It is a super-2 number, since 2×22521612522² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22521612522.

It is not an unprimeable number, because it can be changed into a prime (22521612521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1876801038 + ... + 1876801049.

It is an arithmetic number, because the mean of its divisors is an integer number (5630403132).

Almost surely, 2^22521612522 is an apocalyptic number.

22521612522 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22521612522 is a wasteful number, since it uses less digits than its factorization.

22521612522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3753602092.

The product of its digits is 9600, while the sum is 30.

The spelling of 22521612522 in words is "twenty-two billion, five hundred twenty-one million, six hundred twelve thousand, five hundred twenty-two".