212111112121012 has 96 divisors (see below), whose sum is σ = 405656161827840. Its totient is φ = 96458500131840.

The previous prime is 212111112120983. The next prime is 212111112121057. The reversal of 212111112121012 is 210121211111212.

It is a super-2 number, since 2×212111112121012² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3282760818 + ... + 3282825430.

It is an arithmetic number, because the mean of its divisors is an integer number (4225585019040).

Almost surely, 2^{212111112121012} is an apocalyptic number.

It is an amenable number.

212111112121012 is a deficient number, since it is larger than the sum of its proper divisors (193545049706828).

212111112121012 is a wasteful number, since it uses less digits than its factorization.

212111112121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67193 (or 67191 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 212111112121012 its reverse (210121211111212), we get a palindrome (422232323232224).

The spelling of 212111112121012 in words is "two hundred twelve trillion, one hundred eleven billion, one hundred twelve million, one hundred twenty-one thousand, twelve".