21160112212 has 12 divisors (see below), whose sum is σ = 37205696416. Its totient is φ = 10529913240.

The previous prime is 21160112173. The next prime is 21160112227. The reversal of 21160112212 is 21221106112.

It is a self number, because there is not a number n which added to its sum of digits gives 21160112212.

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, 12534768 + ... + 12536455.

Almost surely, 2^21160112212 is an apocalyptic number.

It is an amenable number.

21160112212 is a deficient number, since it is larger than the sum of its proper divisors (16045584204).

21160112212 is a wasteful number, since it uses less digits than its factorization.

21160112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25071438 (or 25071436 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 21160112212 its reverse (21221106112), we get a palindrome (42381218324).

The spelling of 21160112212 in words is "twenty-one billion, one hundred sixty million, one hundred twelve thousand, two hundred twelve".