21222013112 has 16 divisors (see below), whose sum is σ = 40156333800. Its totient is φ = 10513657440.

The previous prime is 21222013069. The next prime is 21222013133. The reversal of 21222013112 is 21131022212.

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, 12167714 + ... + 12169457.

Almost surely, 2^21222013112 is an apocalyptic number.

It is an amenable number.

21222013112 is a deficient number, since it is larger than the sum of its proper divisors (18934320688).

21222013112 is a wasteful number, since it uses less digits than its factorization.

21222013112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24337286 (or 24337282 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21222013112 its reverse (21131022212), we get a palindrome (42353035324).

The spelling of 21222013112 in words is "twenty-one billion, two hundred twenty-two million, thirteen thousand, one hundred twelve".