22122223312 has 20 divisors (see below), whose sum is σ = 48984923296. Its totient is φ = 9480952800.

The previous prime is 22122223307. The next prime is 22122223327. The reversal of 22122223312 is 21332222122.

It is a congruent number.

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, 98759814 + ... + 98760037.

Almost surely, 2^22122223312 is an apocalyptic number.

It is an amenable number.

22122223312 is an abundant number, since it is smaller than the sum of its proper divisors (26862699984).

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

22122223312 is a wasteful number, since it uses less digits than its factorization.

22122223312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197519866 (or 197519860 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

Adding to 22122223312 its reverse (21332222122), we get a palindrome (43454445434).

The spelling of 22122223312 in words is "twenty-two billion, one hundred twenty-two million, two hundred twenty-three thousand, three hundred twelve".