22102312221217 has 2 divisors, whose sum is σ = 22102312221218. Its totient is φ = 22102312221216.

The previous prime is 22102312221193. The next prime is 22102312221247. The reversal of 22102312221217 is 71212221320122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20651289608161 + 1451022613056 = 4544369^2 + 1204584^2 .

It is a cyclic number.

It is not a de Polignac number, because 22102312221217 - 2³¹ = 22100164737569 is a prime.

It is a super-2 number, since 2×22102312221217² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22102312221247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11051156110608 + 11051156110609.

It is an arithmetic number, because the mean of its divisors is an integer number (11051156110609).

Almost surely, 2^{22102312221217} is an apocalyptic number.

It is an amenable number.

22102312221217 is a deficient number, since it is larger than the sum of its proper divisors (1).

22102312221217 is an equidigital number, since it uses as much as digits as its factorization.

22102312221217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 28.

Adding to 22102312221217 its reverse (71212221320122), we get a palindrome (93314533541339).

The spelling of 22102312221217 in words is "twenty-two trillion, one hundred two billion, three hundred twelve million, two hundred twenty-one thousand, two hundred seventeen".