22166376997 has 2 divisors, whose sum is σ = 22166376998. Its totient is φ = 22166376996.

The previous prime is 22166376941. The next prime is 22166377007. The reversal of 22166376997 is 79967366122.

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., 17217113796 + 4949263201 = 131214^2 + 70351^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22166376997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22166376697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11083188498 + 11083188499.

It is an arithmetic number, because the mean of its divisors is an integer number (11083188499).

Almost surely, 2^22166376997 is an apocalyptic number.

It is an amenable number.

22166376997 is a deficient number, since it is larger than the sum of its proper divisors (1).

22166376997 is an equidigital number, since it uses as much as digits as its factorization.

22166376997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10287648, while the sum is 58.

The spelling of 22166376997 in words is "twenty-two billion, one hundred sixty-six million, three hundred seventy-six thousand, nine hundred ninety-seven".