22123213252 has 24 divisors (see below), whose sum is σ = 45149417600. Its totient is φ = 9481376520.

The previous prime is 22123213241. The next prime is 22123213283. The reversal of 22123213252 is 25231232122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8061024 + ... + 8063767.

Almost surely, 2^22123213252 is an apocalyptic number.

It is an amenable number.

22123213252 is an abundant number, since it is smaller than the sum of its proper divisors (23026204348).

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

22123213252 is a wasteful number, since it uses less digits than its factorization.

22123213252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16124816 (or 16124800 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

Adding to 22123213252 its reverse (25231232122), we get a palindrome (47354445374).

The spelling of 22123213252 in words is "twenty-two billion, one hundred twenty-three million, two hundred thirteen thousand, two hundred fifty-two".