12131311201 has 2 divisors, whose sum is σ = 12131311202. Its totient is φ = 12131311200.

The previous prime is 12131311193. The next prime is 12131311207. The reversal of 12131311201 is 10211313121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11534974801 + 596336400 = 107401^2 + 24420^2 .

It is a cyclic number.

It is not a de Polignac number, because 12131311201 - 2³ = 12131311193 is a prime.

It is a super-2 number, since 2×12131311201² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12131311207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6065655600 + 6065655601.

It is an arithmetic number, because the mean of its divisors is an integer number (6065655601).

Almost surely, 2^12131311201 is an apocalyptic number.

It is an amenable number.

12131311201 is a deficient number, since it is larger than the sum of its proper divisors (1).

12131311201 is an equidigital number, since it uses as much as digits as its factorization.

12131311201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 12131311201 its reverse (10211313121), we get a palindrome (22342624322).

The spelling of 12131311201 in words is "twelve billion, one hundred thirty-one million, three hundred eleven thousand, two hundred one".