121022002200021 has 32 divisors (see below), whose sum is σ = 182922245184000. Its totient is φ = 70554951488448.

The previous prime is 121022002199953. The next prime is 121022002200089. The reversal of 121022002200021 is 120002200220121.

It is an interprime number because it is at equal distance from previous prime (121022002199953) and next prime (121022002200089).

It is not a de Polignac number, because 121022002200021 - 2²¹ = 121022000102869 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 (121022002200091) 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, 189806770 + ... + 190443308.

It is an arithmetic number, because the mean of its divisors is an integer number (5716320162000).

Almost surely, 2^{121022002200021} is an apocalyptic number.

It is an amenable number.

121022002200021 is a deficient number, since it is larger than the sum of its proper divisors (61900242983979).

121022002200021 is a wasteful number, since it uses less digits than its factorization.

121022002200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893153.

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

Adding to 121022002200021 its reverse (120002200220121), we get a palindrome (241024202420142).

The spelling of 121022002200021 in words is "one hundred twenty-one trillion, twenty-two billion, two million, two hundred thousand, twenty-one".