202221112022221 has 2 divisors, whose sum is σ = 202221112022222. Its totient is φ = 202221112022220.

The previous prime is 202221112022203. The next prime is 202221112022263. The reversal of 202221112022221 is 122220211122202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151413369540196 + 50807742482025 = 12305014^2 + 7127955^2 .

It is a cyclic number.

It is not a de Polignac number, because 202221112022221 - 2¹¹ = 202221112020173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202221112022192 and 202221112022201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202221112026221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101110556011110 + 101110556011111.

It is an arithmetic number, because the mean of its divisors is an integer number (101110556011111).

Almost surely, 2^{202221112022221} is an apocalyptic number.

It is an amenable number.

202221112022221 is a deficient number, since it is larger than the sum of its proper divisors (1).

202221112022221 is an equidigital number, since it uses as much as digits as its factorization.

202221112022221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 202221112022221 its reverse (122220211122202), we get a palindrome (324441323144423).

The spelling of 202221112022221 in words is "two hundred two trillion, two hundred twenty-one billion, one hundred twelve million, twenty-two thousand, two hundred twenty-one".