12131302501 has 2 divisors, whose sum is σ = 12131302502. Its totient is φ = 12131302500.

The previous prime is 12131302439. The next prime is 12131302529. The reversal of 12131302501 is 10520313121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7404602500 + 4726700001 = 86050^2 + 68751^2 .

It is a cyclic number.

It is not a de Polignac number, because 12131302501 - 2¹³ = 12131294309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12131302541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6065651250 + 6065651251.

It is an arithmetic number, because the mean of its divisors is an integer number (6065651251).

Almost surely, 2^12131302501 is an apocalyptic number.

It is an amenable number.

12131302501 is a deficient number, since it is larger than the sum of its proper divisors (1).

12131302501 is an equidigital number, since it uses as much as digits as its factorization.

12131302501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 19.

Adding to 12131302501 its reverse (10520313121), we get a palindrome (22651615622).

The spelling of 12131302501 in words is "twelve billion, one hundred thirty-one million, three hundred two thousand, five hundred one".