12020012120121 has 32 divisors (see below), whose sum is σ = 16321860172800. Its totient is φ = 7867528885440.

The previous prime is 12020012120113. The next prime is 12020012120147. The reversal of 12020012120121 is 12102121002021.

12020012120121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12020012120121 - 2³ = 12020012120113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12020012120121.

It is not an unprimeable number, because it can be changed into a prime (12020012120821) 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, 13065540 + ... + 13955226.

It is an arithmetic number, because the mean of its divisors is an integer number (510058130400).

Almost surely, 2^{12020012120121} is an apocalyptic number.

It is an amenable number.

12020012120121 is a deficient number, since it is larger than the sum of its proper divisors (4301848052679).

12020012120121 is a wasteful number, since it uses less digits than its factorization.

12020012120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890189.

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

Adding to 12020012120121 its reverse (12102121002021), we get a palindrome (24122133122142).

The spelling of 12020012120121 in words is "twelve trillion, twenty billion, twelve million, one hundred twenty thousand, one hundred twenty-one".