212101122112 has 28 divisors (see below), whose sum is σ = 459150726096. Its totient is φ = 96409600640.

The previous prime is 212101122109. The next prime is 212101122127. The reversal of 212101122112 is 211221101212.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150639298 + ... + 150640705.

Almost surely, 2^212101122112 is an apocalyptic number.

212101122112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212101122112 is an abundant number, since it is smaller than the sum of its proper divisors (247049603984).

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

212101122112 is a wasteful number, since it uses less digits than its factorization.

212101122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301280026 (or 301280016 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212101122112 its reverse (211221101212), we get a palindrome (423322223324).

The spelling of 212101122112 in words is "two hundred twelve billion, one hundred one million, one hundred twenty-two thousand, one hundred twelve".