22200002012021 has 2 divisors, whose sum is σ = 22200002012022. Its totient is φ = 22200002012020.

The previous prime is 22200002012017. The next prime is 22200002012039. The reversal of 22200002012021 is 12021020000222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21311056632100 + 888945379921 = 4616390^2 + 942839^2 .

It is a cyclic number.

It is not a de Polignac number, because 22200002012021 - 2² = 22200002012017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22200002011987 and 22200002012005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22200002018021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100001006010 + 11100001006011.

It is an arithmetic number, because the mean of its divisors is an integer number (11100001006011).

Almost surely, 2^{22200002012021} is an apocalyptic number.

It is an amenable number.

22200002012021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22200002012021 is an equidigital number, since it uses as much as digits as its factorization.

22200002012021 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 14.

Adding to 22200002012021 its reverse (12021020000222), we get a palindrome (34221022012243).

The spelling of 22200002012021 in words is "twenty-two trillion, two hundred billion, two million, twelve thousand, twenty-one".