212113131112 has 64 divisors (see below), whose sum is σ = 405208440000. Its totient is φ = 104077923840.

The previous prime is 212113131107. The next prime is 212113131149. The reversal of 212113131112 is 211131311212.

It is a self number, because there is not a number n which added to its sum of digits gives 212113131112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79770439 + ... + 79773097.

It is an arithmetic number, because the mean of its divisors is an integer number (6331381875).

Almost surely, 2^212113131112 is an apocalyptic number.

It is an amenable number.

212113131112 is a deficient number, since it is larger than the sum of its proper divisors (193095308888).

212113131112 is a wasteful number, since it uses less digits than its factorization.

212113131112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3554 (or 3550 counting only the distinct ones).

The product of its digits is 72, while the sum is 19.

Adding to 212113131112 its reverse (211131311212), we get a palindrome (423244442324).

The spelling of 212113131112 in words is "two hundred twelve billion, one hundred thirteen million, one hundred thirty-one thousand, one hundred twelve".