120212102121 has 16 divisors (see below), whose sum is σ = 164986428864. Its totient is φ = 77799369024.

The previous prime is 120212102039. The next prime is 120212102161. The reversal of 120212102121 is 121201212021.

It is not a de Polignac number, because 120212102121 - 2¹⁹ = 120211577833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120212102121.

It is not an unprimeable number, because it can be changed into a prime (120212102161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1173166 + ... + 1271511.

It is an arithmetic number, because the mean of its divisors is an integer number (10311651804).

Almost surely, 2^120212102121 is an apocalyptic number.

It is an amenable number.

120212102121 is a deficient number, since it is larger than the sum of its proper divisors (44774326743).

120212102121 is a wasteful number, since it uses less digits than its factorization.

120212102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445160.

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

Adding to 120212102121 its reverse (121201212021), we get a palindrome (241413314142).

The spelling of 120212102121 in words is "one hundred twenty billion, two hundred twelve million, one hundred two thousand, one hundred twenty-one".