202221002200021 has 8 divisors (see below), whose sum is σ = 231135021780224. Its totient is φ = 173313308864880.

The previous prime is 202221002199947. The next prime is 202221002200051. The reversal of 202221002200021 is 120002200122202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202221002200021 - 2²⁹ = 202220465329109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202221002199968 and 202221002200004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202221002200051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1581492765 + ... + 1581620626.

It is an arithmetic number, because the mean of its divisors is an integer number (28891877722528).

Almost surely, 2^{202221002200021} is an apocalyptic number.

It is an amenable number.

202221002200021 is a deficient number, since it is larger than the sum of its proper divisors (28914019580203).

202221002200021 is an equidigital number, since it uses as much as digits as its factorization.

202221002200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3163122531.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 202221002200021 its reverse (120002200122202), we get a palindrome (322223202322223).

The spelling of 202221002200021 in words is "two hundred two trillion, two hundred twenty-one billion, two million, two hundred thousand, twenty-one".