212112211122012 has 48 divisors (see below), whose sum is σ = 498769333247360. Its totient is φ = 70156780371648.

The previous prime is 212112211121953. The next prime is 212112211122029. The reversal of 212112211122012 is 210221112211212.

It is a self number, because there is not a number n which added to its sum of digits gives 212112211122012.

It is a congruent number.

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, 86383603 + ... + 88805130.

Almost surely, 2^{212112211122012} is an apocalyptic number.

It is an amenable number.

212112211122012 is an abundant number, since it is smaller than the sum of its proper divisors (286657122125348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212112211122012 is a wasteful number, since it uses less digits than its factorization.

212112211122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175189522 (or 175189520 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 212112211122012 its reverse (210221112211212), we get a palindrome (422333323333224).

The spelling of 212112211122012 in words is "two hundred twelve trillion, one hundred twelve billion, two hundred eleven million, one hundred twenty-two thousand, twelve".