202022222221 has 2 divisors, whose sum is σ = 202022222222. Its totient is φ = 202022222220.

The previous prime is 202022222179. The next prime is 202022222231. The reversal of 202022222221 is 122222220202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113578436196 + 88443786025 = 337014^2 + 297395^2 .

It is a cyclic number.

It is not a de Polignac number, because 202022222221 - 2²³ = 202013833613 is a prime.

It is a super-2 number, since 2×202022222221² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202022222231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101011111110 + 101011111111.

It is an arithmetic number, because the mean of its divisors is an integer number (101011111111).

Almost surely, 2^202022222221 is an apocalyptic number.

It is an amenable number.

202022222221 is a deficient number, since it is larger than the sum of its proper divisors (1).

202022222221 is an equidigital number, since it uses as much as digits as its factorization.

202022222221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 202022222221 its reverse (122222220202), we get a palindrome (324244442423).

The spelling of 202022222221 in words is "two hundred two billion, twenty-two million, two hundred twenty-two thousand, two hundred twenty-one".