202122200222221 has 2 divisors, whose sum is σ = 202122200222222. Its totient is φ = 202122200222220.

The previous prime is 202122200222203. The next prime is 202122200222297. The reversal of 202122200222221 is 122222002221202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196473906117225 + 5648294104996 = 14016915^2 + 2376614^2 .

It is a cyclic number.

It is not a de Polignac number, because 202122200222221 - 2⁷ = 202122200222093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202122200222192 and 202122200222201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202122200220221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101061100111110 + 101061100111111.

It is an arithmetic number, because the mean of its divisors is an integer number (101061100111111).

Almost surely, 2^{202122200222221} is an apocalyptic number.

It is an amenable number.

202122200222221 is a deficient number, since it is larger than the sum of its proper divisors (1).

202122200222221 is an equidigital number, since it uses as much as digits as its factorization.

202122200222221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 202122200222221 its reverse (122222002221202), we get a palindrome (324344202443423).

The spelling of 202122200222221 in words is "two hundred two trillion, one hundred twenty-two billion, two hundred million, two hundred twenty-two thousand, two hundred twenty-one".