202000021112221 has 2 divisors, whose sum is σ = 202000021112222. Its totient is φ = 202000021112220.

The previous prime is 202000021112189. The next prime is 202000021112231. The reversal of 202000021112221 is 122211120000202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180267921579321 + 21732099532900 = 13426389^2 + 4661770^2 .

It is a cyclic number.

It is not a de Polignac number, because 202000021112221 - 2⁵ = 202000021112189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202000021112195 and 202000021112204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202000021112231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101000010556110 + 101000010556111.

It is an arithmetic number, because the mean of its divisors is an integer number (101000010556111).

Almost surely, 2^{202000021112221} is an apocalyptic number.

It is an amenable number.

202000021112221 is a deficient number, since it is larger than the sum of its proper divisors (1).

202000021112221 is an equidigital number, since it uses as much as digits as its factorization.

202000021112221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202000021112221 its reverse (122211120000202), we get a palindrome (324211141112423).

The spelling of 202000021112221 in words is "two hundred two trillion, twenty-one million, one hundred twelve thousand, two hundred twenty-one".