12512457101 has 2 divisors, whose sum is σ = 12512457102. Its totient is φ = 12512457100.

The previous prime is 12512457059. The next prime is 12512457109. The reversal of 12512457101 is 10175421521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12199202500 + 313254601 = 110450^2 + 17699^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12512457101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12512457109) 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, 6256228550 + 6256228551.

It is an arithmetic number, because the mean of its divisors is an integer number (6256228551).

Almost surely, 2^12512457101 is an apocalyptic number.

It is an amenable number.

12512457101 is a deficient number, since it is larger than the sum of its proper divisors (1).

12512457101 is an equidigital number, since it uses as much as digits as its factorization.

12512457101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2800, while the sum is 29.

Adding to 12512457101 its reverse (10175421521), we get a palindrome (22687878622).

The spelling of 12512457101 in words is "twelve billion, five hundred twelve million, four hundred fifty-seven thousand, one hundred one".