202202222231021 has 2 divisors, whose sum is σ = 202202222231022. Its totient is φ = 202202222231020.

The previous prime is 202202222230991. The next prime is 202202222231033. The reversal of 202202222231021 is 120132222202202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106376017515625 + 95826204715396 = 10313875^2 + 9789086^2 .

It is a cyclic number.

It is not a de Polignac number, because 202202222231021 - 2²⁶ = 202202155122157 is a prime.

It is a super-2 number, since 2×202202222231021² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202202222231221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101101111115510 + 101101111115511.

It is an arithmetic number, because the mean of its divisors is an integer number (101101111115511).

Almost surely, 2^{202202222231021} is an apocalyptic number.

It is an amenable number.

202202222231021 is a deficient number, since it is larger than the sum of its proper divisors (1).

202202222231021 is an equidigital number, since it uses as much as digits as its factorization.

202202222231021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 202202222231021 its reverse (120132222202202), we get a palindrome (322334444433223).

The spelling of 202202222231021 in words is "two hundred two trillion, two hundred two billion, two hundred twenty-two million, two hundred thirty-one thousand, twenty-one".