202201102022221 has 2 divisors, whose sum is σ = 202201102022222. Its totient is φ = 202201102022220.

The previous prime is 202201102022207. The next prime is 202201102022263. The reversal of 202201102022221 is 122220201102202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116548649892900 + 85652452129321 = 10795770^2 + 9254861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202201102022221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202201102022291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101100551011110 + 101100551011111.

It is an arithmetic number, because the mean of its divisors is an integer number (101100551011111).

Almost surely, 2^{202201102022221} is an apocalyptic number.

It is an amenable number.

202201102022221 is a deficient number, since it is larger than the sum of its proper divisors (1).

202201102022221 is an equidigital number, since it uses as much as digits as its factorization.

202201102022221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 202201102022221 its reverse (122220201102202), we get a palindrome (324421303124423).

The spelling of 202201102022221 in words is "two hundred two trillion, two hundred one billion, one hundred two million, twenty-two thousand, two hundred twenty-one".