12125100017 has 2 divisors, whose sum is σ = 12125100018. Its totient is φ = 12125100016.

The previous prime is 12125099999. The next prime is 12125100061. The reversal of 12125100017 is 71000152121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12052526656 + 72573361 = 109784^2 + 8519^2 .

It is a cyclic number.

It is not a de Polignac number, because 12125100017 - 2⁶ = 12125099953 is a prime.

It is not a weakly prime, because it can be changed into another prime (12125100067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6062550008 + 6062550009.

It is an arithmetic number, because the mean of its divisors is an integer number (6062550009).

Almost surely, 2^12125100017 is an apocalyptic number.

It is an amenable number.

12125100017 is a deficient number, since it is larger than the sum of its proper divisors (1).

12125100017 is an equidigital number, since it uses as much as digits as its factorization.

12125100017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140, while the sum is 20.

Adding to 12125100017 its reverse (71000152121), we get a palindrome (83125252138).

The spelling of 12125100017 in words is "twelve billion, one hundred twenty-five million, one hundred thousand, seventeen".