12133125817 has 2 divisors, whose sum is σ = 12133125818. Its totient is φ = 12133125816.

The previous prime is 12133125799. The next prime is 12133125839. The reversal of 12133125817 is 71852133121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6377779321 + 5755346496 = 79861^2 + 75864^2 .

It is an emirp because it is prime and its reverse (71852133121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12133125817 - 2⁷ = 12133125689 is a prime.

It is not a weakly prime, because it can be changed into another prime (12133125857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6066562908 + 6066562909.

It is an arithmetic number, because the mean of its divisors is an integer number (6066562909).

Almost surely, 2^12133125817 is an apocalyptic number.

It is an amenable number.

12133125817 is a deficient number, since it is larger than the sum of its proper divisors (1).

12133125817 is an equidigital number, since it uses as much as digits as its factorization.

12133125817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 34.

Adding to 12133125817 its reverse (71852133121), we get a palindrome (83985258938).

The spelling of 12133125817 in words is "twelve billion, one hundred thirty-three million, one hundred twenty-five thousand, eight hundred seventeen".