22200001111021 has 2 divisors, whose sum is σ = 22200001111022. Its totient is φ = 22200001111020.

The previous prime is 22200001111009. The next prime is 22200001111087. The reversal of 22200001111021 is 12011110000222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17702467204900 + 4497533906121 = 4207430^2 + 2120739^2 .

It is a cyclic number.

It is not a de Polignac number, because 22200001111021 - 2¹¹ = 22200001108973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22200001110992 and 22200001111010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22200001114021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100000555510 + 11100000555511.

It is an arithmetic number, because the mean of its divisors is an integer number (11100000555511).

Almost surely, 2^{22200001111021} is an apocalyptic number.

It is an amenable number.

22200001111021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22200001111021 is an equidigital number, since it uses as much as digits as its factorization.

22200001111021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22200001111021 its reverse (12011110000222), we get a palindrome (34211111111243).

The spelling of 22200001111021 in words is "twenty-two trillion, two hundred billion, one million, one hundred eleven thousand, twenty-one".