212101122212112 has 40 divisors (see below), whose sum is σ = 626203313198656. Its totient is φ = 60600320631936.

The previous prime is 212101122212101. The next prime is 212101122212117. The reversal of 212101122212112 is 211212221101212.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (212101122212117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315626669623 + ... + 315626670294.

Almost surely, 2^{212101122212112} is an apocalyptic number.

It is an amenable number.

212101122212112 is an abundant number, since it is smaller than the sum of its proper divisors (414102190986544).

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

212101122212112 is a wasteful number, since it uses less digits than its factorization.

212101122212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631253339935 (or 631253339929 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 212101122212112 its reverse (211212221101212), we get a palindrome (423313343313324).

The spelling of 212101122212112 in words is "two hundred twelve trillion, one hundred one billion, one hundred twenty-two million, two hundred twelve thousand, one hundred twelve".