202202200121021 has 8 divisors (see below), whose sum is σ = 202854254610744. Its totient is φ = 201550184110080.

The previous prime is 202202200120859. The next prime is 202202200121137. The reversal of 202202200121021 is 120121002202202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 44331494076100 + 157870706044921 = 6658190^2 + 12564661^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202202200121021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202202200121521) 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, 925661 + ... + 20131101.

It is an arithmetic number, because the mean of its divisors is an integer number (25356781826343).

Almost surely, 2^{202202200121021} is an apocalyptic number.

It is an amenable number.

202202200121021 is a deficient number, since it is larger than the sum of its proper divisors (652054489723).

202202200121021 is a wasteful number, since it uses less digits than its factorization.

202202200121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19239391.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 202202200121021 its reverse (120121002202202), we get a palindrome (322323202323223).

The spelling of 202202200121021 in words is "two hundred two trillion, two hundred two billion, two hundred million, one hundred twenty-one thousand, twenty-one".