212112111012 has 12 divisors (see below), whose sum is σ = 494928259056. Its totient is φ = 70704037000.

The previous prime is 212112110971. The next prime is 212112111037. The reversal of 212112111012 is 210111211212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 212112110982 and 212112111000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8838004614 + ... + 8838004637.

It is an arithmetic number, because the mean of its divisors is an integer number (41244021588).

Almost surely, 2^212112111012 is an apocalyptic number.

It is an amenable number.

212112111012 is an abundant number, since it is smaller than the sum of its proper divisors (282816148044).

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

212112111012 is a wasteful number, since it uses less digits than its factorization.

212112111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17676009258 (or 17676009256 counting only the distinct ones).

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

Adding to 212112111012 its reverse (210111211212), we get a palindrome (422223322224).

The spelling of 212112111012 in words is "two hundred twelve billion, one hundred twelve million, one hundred eleven thousand, twelve".