212012040112 has 40 divisors (see below), whose sum is σ = 418108016160. Its totient is φ = 104124303360.

The previous prime is 212012040103. The next prime is 212012040157. The reversal of 212012040112 is 211040210212.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41313 + ... + 652480.

It is an arithmetic number, because the mean of its divisors is an integer number (10452700404).

Almost surely, 2^212012040112 is an apocalyptic number.

It is an amenable number.

212012040112 is a deficient number, since it is larger than the sum of its proper divisors (206095976048).

212012040112 is a wasteful number, since it uses less digits than its factorization.

212012040112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694141 (or 694135 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212012040112 its reverse (211040210212), we get a palindrome (423052250324).

The spelling of 212012040112 in words is "two hundred twelve billion, twelve million, forty thousand, one hundred twelve".