212121010022112 has 36 divisors (see below), whose sum is σ = 603219122251200. Its totient is φ = 70707003340608.

The previous prime is 212121010022083. The next prime is 212121010022149. The reversal of 212121010022112 is 211220010121212.

212121010022112 is a `hidden beast` number, since 2 + 121 + 210 + 100 + 221 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×212121010022112³ (a number of 44 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 368265642112 + ... + 368265642687.

It is an arithmetic number, because the mean of its divisors is an integer number (16756086729200).

Almost surely, 2^{212121010022112} is an apocalyptic number.

It is an amenable number.

212121010022112 is an abundant number, since it is smaller than the sum of its proper divisors (391098112229088).

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

212121010022112 is a wasteful number, since it uses less digits than its factorization.

212121010022112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736531284815 (or 736531284804 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212121010022112 its reverse (211220010121212), we get a palindrome (423341020143324).

The spelling of 212121010022112 in words is "two hundred twelve trillion, one hundred twenty-one billion, ten million, twenty-two thousand, one hundred twelve".