212112221221112 has 16 divisors (see below), whose sum is σ = 397749548112840. Its totient is φ = 106045675057696.

The previous prime is 212112221221093. The next prime is 212112221221129. The reversal of 212112221221112 is 211122122211212.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 1304357723 + ... + 1304520330.

Almost surely, 2^{212112221221112} is an apocalyptic number.

It is an amenable number.

212112221221112 is a deficient number, since it is larger than the sum of its proper divisors (185637326891728).

212112221221112 is a wasteful number, since it uses less digits than its factorization.

212112221221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2608888222 (or 2608888218 counting only the distinct ones).

The product of its digits is 256, while the sum is 23.

Adding to 212112221221112 its reverse (211122122211212), we get a palindrome (423234343432324).

The spelling of 212112221221112 in words is "two hundred twelve trillion, one hundred twelve billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred twelve".