12255423322117 has 2 divisors, whose sum is σ = 12255423322118. Its totient is φ = 12255423322116.

The previous prime is 12255423322031. The next prime is 12255423322159. The reversal of 12255423322117 is 71122332455221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7345693566436 + 4909729755681 = 2710294^2 + 2215791^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12255423322117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12255423322117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12255423322517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6127711661058 + 6127711661059.

It is an arithmetic number, because the mean of its divisors is an integer number (6127711661059).

Almost surely, 2^{12255423322117} is an apocalyptic number.

It is an amenable number.

12255423322117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12255423322117 is an equidigital number, since it uses as much as digits as its factorization.

12255423322117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 40.

Adding to 12255423322117 its reverse (71122332455221), we get a palindrome (83377755777338).

The spelling of 12255423322117 in words is "twelve trillion, two hundred fifty-five billion, four hundred twenty-three million, three hundred twenty-two thousand, one hundred seventeen".