22102012022021 has 2 divisors, whose sum is σ = 22102012022022. Its totient is φ = 22102012022020.

The previous prime is 22102012021889. The next prime is 22102012022047. The reversal of 22102012022021 is 12022021020122.

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., 15063045880996 + 7038966141025 = 3881114^2 + 2653105^2 .

It is a cyclic number.

It is not a de Polignac number, because 22102012022021 - 2³⁴ = 22084832152837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22102012022071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11051006011010 + 11051006011011.

It is an arithmetic number, because the mean of its divisors is an integer number (11051006011011).

Almost surely, 2^{22102012022021} is an apocalyptic number.

It is an amenable number.

22102012022021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22102012022021 is an equidigital number, since it uses as much as digits as its factorization.

22102012022021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22102012022021 its reverse (12022021020122), we get a palindrome (34124033042143).

The spelling of 22102012022021 in words is "twenty-two trillion, one hundred two billion, twelve million, twenty-two thousand, twenty-one".