1272231125117 has 2 divisors, whose sum is σ = 1272231125118. Its totient is φ = 1272231125116.

The previous prime is 1272231125107. The next prime is 1272231125129. The reversal of 1272231125117 is 7115211322721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 713102558116 + 559128567001 = 844454^2 + 747749^2 .

It is a cyclic number.

It is not a de Polignac number, because 1272231125117 - 2⁸ = 1272231124861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1272231125107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636115562558 + 636115562559.

It is an arithmetic number, because the mean of its divisors is an integer number (636115562559).

Almost surely, 2^{1272231125117} is an apocalyptic number.

It is an amenable number.

1272231125117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272231125117 is an equidigital number, since it uses as much as digits as its factorization.

1272231125117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11760, while the sum is 35.

Adding to 1272231125117 its reverse (7115211322721), we get a palindrome (8387442447838).

The spelling of 1272231125117 in words is "one trillion, two hundred seventy-two billion, two hundred thirty-one million, one hundred twenty-five thousand, one hundred seventeen".