12021000202120 has 64 divisors (see below), whose sum is σ = 33288923646720. Its totient is φ = 3804448414464.

The previous prime is 12021000202091. The next prime is 12021000202153. The reversal of 12021000202120 is 2120200012021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 12021000202120.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1651232652 + ... + 1651239931.

It is an arithmetic number, because the mean of its divisors is an integer number (520139431980).

Almost surely, 2^{12021000202120} is an apocalyptic number.

12021000202120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021000202120 is an abundant number, since it is smaller than the sum of its proper divisors (21267923444600).

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

12021000202120 is a wasteful number, since it uses less digits than its factorization.

12021000202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3302472614 (or 3302472610 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12021000202120 its reverse (2120200012021), we get a palindrome (14141200214141).

The spelling of 12021000202120 in words is "twelve trillion, twenty-one billion, two hundred two thousand, one hundred twenty".