12750070121 has 2 divisors, whose sum is σ = 12750070122. Its totient is φ = 12750070120.

The previous prime is 12750070063. The next prime is 12750070199. The reversal of 12750070121 is 12107005721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10063099225 + 2686970896 = 100315^2 + 51836^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12750070121 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12750072121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6375035060 + 6375035061.

It is an arithmetic number, because the mean of its divisors is an integer number (6375035061).

Almost surely, 2^12750070121 is an apocalyptic number.

It is an amenable number.

12750070121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12750070121 is an equidigital number, since it uses as much as digits as its factorization.

12750070121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 980, while the sum is 26.

Adding to 12750070121 its reverse (12107005721), we get a palindrome (24857075842).

The spelling of 12750070121 in words is "twelve billion, seven hundred fifty million, seventy thousand, one hundred twenty-one".