212112200121 has 32 divisors (see below), whose sum is σ = 288223488000. Its totient is φ = 138726494208.

The previous prime is 212112200119. The next prime is 212112200173. The reversal of 212112200121 is 121002211212.

It is not a de Polignac number, because 212112200121 - 2¹ = 212112200119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212112200121.

It is not an unprimeable number, because it can be changed into a prime (212112200021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94734120 + ... + 94736358.

It is an arithmetic number, because the mean of its divisors is an integer number (9006984000).

Almost surely, 2^212112200121 is an apocalyptic number.

It is an amenable number.

212112200121 is a deficient number, since it is larger than the sum of its proper divisors (76111287879).

212112200121 is a wasteful number, since it uses less digits than its factorization.

212112200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4433.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212112200121 its reverse (121002211212), we get a palindrome (333114411333).

The spelling of 212112200121 in words is "two hundred twelve billion, one hundred twelve million, two hundred thousand, one hundred twenty-one".