22442660001997 has 2 divisors, whose sum is σ = 22442660001998. Its totient is φ = 22442660001996.

The previous prime is 22442660001899. The next prime is 22442660002013. The reversal of 22442660001997 is 79910006624422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21288386956356 + 1154273045641 = 4613934^2 + 1074371^2 .

It is a cyclic number.

It is not a de Polignac number, because 22442660001997 - 2⁴³ = 13646566979789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22442669001997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11221330000998 + 11221330000999.

It is an arithmetic number, because the mean of its divisors is an integer number (11221330000999).

Almost surely, 2^{22442660001997} is an apocalyptic number.

It is an amenable number.

22442660001997 is a deficient number, since it is larger than the sum of its proper divisors (1).

22442660001997 is an equidigital number, since it uses as much as digits as its factorization.

22442660001997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 22442660001997 in words is "twenty-two trillion, four hundred forty-two billion, six hundred sixty million, one thousand, nine hundred ninety-seven".