120201220200021 has 16 divisors (see below), whose sum is σ = 160707283526400. Its totient is φ = 79914658065408.

The previous prime is 120201220200007. The next prime is 120201220200023. The reversal of 120201220200021 is 120002022102021.

It is not a de Polignac number, because 120201220200021 - 2¹⁵ = 120201220167253 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120201220200023) 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, 80301925 + ... + 81785093.

It is an arithmetic number, because the mean of its divisors is an integer number (10044205220400).

Almost surely, 2^{120201220200021} is an apocalyptic number.

It is an amenable number.

120201220200021 is a deficient number, since it is larger than the sum of its proper divisors (40506063326379).

120201220200021 is a wasteful number, since it uses less digits than its factorization.

120201220200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557148.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 120201220200021 its reverse (120002022102021), we get a palindrome (240203242302042).

The spelling of 120201220200021 in words is "one hundred twenty trillion, two hundred one billion, two hundred twenty million, two hundred thousand, twenty-one".