212102121011112 has 48 divisors (see below), whose sum is σ = 574452429071040. Its totient is φ = 70699576583328.

The previous prime is 212102121011071. The next prime is 212102121011147. The reversal of 212102121011112 is 211110121201212.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19009968 + ... + 28028255.

It is an arithmetic number, because the mean of its divisors is an integer number (11967758938980).

Almost surely, 2^{212102121011112} is an apocalyptic number.

It is an amenable number.

212102121011112 is an abundant number, since it is smaller than the sum of its proper divisors (362350308059928).

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

212102121011112 is a wasteful number, since it uses less digits than its factorization.

212102121011112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47100862 (or 47100855 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 212102121011112 its reverse (211110121201212), we get a palindrome (423212242212324).

The spelling of 212102121011112 in words is "two hundred twelve trillion, one hundred two billion, one hundred twenty-one million, eleven thousand, one hundred twelve".