22431220312 has 16 divisors (see below), whose sum is σ = 43415265600. Its totient is φ = 10853816160.

The previous prime is 22431220307. The next prime is 22431220313. The reversal of 22431220312 is 21302213422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22431220313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45223987 + ... + 45224482.

It is an arithmetic number, because the mean of its divisors is an integer number (2713454100).

Almost surely, 2^22431220312 is an apocalyptic number.

It is an amenable number.

22431220312 is a deficient number, since it is larger than the sum of its proper divisors (20984045288).

22431220312 is a wasteful number, since it uses less digits than its factorization.

22431220312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90448506 (or 90448502 counting only the distinct ones).

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

Adding to 22431220312 its reverse (21302213422), we get a palindrome (43733433734).

The spelling of 22431220312 in words is "twenty-two billion, four hundred thirty-one million, two hundred twenty thousand, three hundred twelve".