22111976646689 has 2 divisors, whose sum is σ = 22111976646690. Its totient is φ = 22111976646688.

The previous prime is 22111976646679. The next prime is 22111976646731. The reversal of 22111976646689 is 98664667911122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18481332216064 + 3630644430625 = 4298992^2 + 1905425^2 .

It is a cyclic number.

It is not a de Polignac number, because 22111976646689 - 2³⁶ = 22043257169953 is a prime.

It is a super-2 number, since 2×22111976646689² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22111976646629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055988323344 + 11055988323345.

It is an arithmetic number, because the mean of its divisors is an integer number (11055988323345).

Almost surely, 2^{22111976646689} is an apocalyptic number.

It is an amenable number.

22111976646689 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111976646689 is an equidigital number, since it uses as much as digits as its factorization.

22111976646689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94058496, while the sum is 68.

The spelling of 22111976646689 in words is "twenty-two trillion, one hundred eleven billion, nine hundred seventy-six million, six hundred forty-six thousand, six hundred eighty-nine".