22521122152 has 16 divisors (see below), whose sum is σ = 44063065440. Its totient is φ = 10770971376.

The previous prime is 22521122119. The next prime is 22521122227. The reversal of 22521122152 is 25122112522.

It is a super-2 number, since 2×22521122152² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61198518 + ... + 61198885.

It is an arithmetic number, because the mean of its divisors is an integer number (2753941590).

Almost surely, 2^22521122152 is an apocalyptic number.

It is an amenable number.

22521122152 is a deficient number, since it is larger than the sum of its proper divisors (21541943288).

22521122152 is a wasteful number, since it uses less digits than its factorization.

22521122152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122397432 (or 122397428 counting only the distinct ones).

The product of its digits is 1600, while the sum is 25.

Adding to 22521122152 its reverse (25122112522), we get a palindrome (47643234674).

The spelling of 22521122152 in words is "twenty-two billion, five hundred twenty-one million, one hundred twenty-two thousand, one hundred fifty-two".