22200212122021 has 2 divisors, whose sum is σ = 22200212122022. Its totient is φ = 22200212122020.

The previous prime is 22200212122013. The next prime is 22200212122097. The reversal of 22200212122021 is 12022121200222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20985918319521 + 1214293802500 = 4581039^2 + 1101950^2 .

It is a cyclic number.

It is not a de Polignac number, because 22200212122021 - 2³ = 22200212122013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22200212122021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22200212122721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100106061010 + 11100106061011.

It is an arithmetic number, because the mean of its divisors is an integer number (11100106061011).

Almost surely, 2^{22200212122021} is an apocalyptic number.

It is an amenable number.

22200212122021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22200212122021 is an equidigital number, since it uses as much as digits as its factorization.

22200212122021 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 22200212122021 its reverse (12022121200222), we get a palindrome (34222333322243).

The spelling of 22200212122021 in words is "twenty-two trillion, two hundred billion, two hundred twelve million, one hundred twenty-two thousand, twenty-one".