212112111210 has 32 divisors (see below), whose sum is σ = 509855928192. Its totient is φ = 56475800640.

The previous prime is 212112111209. The next prime is 212112111227. The reversal of 212112111210 is 12111211212.

It is a happy number.

It is a super-3 number, since 3×212112111210³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 212112111210.

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, 5444581 + ... + 5483400.

It is an arithmetic number, because the mean of its divisors is an integer number (15932997756).

Almost surely, 2^212112111210 is an apocalyptic number.

212112111210 is an abundant number, since it is smaller than the sum of its proper divisors (297743816982).

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

212112111210 is a wasteful number, since it uses less digits than its factorization.

212112111210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10928638.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 212112111210 its reverse (12111211212), we get a palindrome (224223322422).

The spelling of 212112111210 in words is "two hundred twelve billion, one hundred twelve million, one hundred eleven thousand, two hundred ten".