12220115927797 has 2 divisors, whose sum is σ = 12220115927798. Its totient is φ = 12220115927796.

The previous prime is 12220115927759. The next prime is 12220115927813. The reversal of 12220115927797 is 79772951102221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10562591000196 + 1657524927601 = 3250014^2 + 1287449^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220115927797 - 2³⁵ = 12185756189429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12220115927707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110057963898 + 6110057963899.

It is an arithmetic number, because the mean of its divisors is an integer number (6110057963899).

Almost surely, 2^{12220115927797} is an apocalyptic number.

It is an amenable number.

12220115927797 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220115927797 is an equidigital number, since it uses as much as digits as its factorization.

12220115927797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2222640, while the sum is 55.

The spelling of 12220115927797 in words is "twelve trillion, two hundred twenty billion, one hundred fifteen million, nine hundred twenty-seven thousand, seven hundred ninety-seven".