12131233313281 has 2 divisors, whose sum is σ = 12131233313282. Its totient is φ = 12131233313280.

The previous prime is 12131233313263. The next prime is 12131233313351. The reversal of 12131233313281 is 18231333213121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6979059687681 + 5152173625600 = 2641791^2 + 2269840^2 .

It is a cyclic number.

It is not a de Polignac number, because 12131233313281 - 2⁷ = 12131233313153 is a prime.

It is a super-2 number, since 2×12131233313281² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12131233313261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6065616656640 + 6065616656641.

It is an arithmetic number, because the mean of its divisors is an integer number (6065616656641).

Almost surely, 2^{12131233313281} is an apocalyptic number.

It is an amenable number.

12131233313281 is a deficient number, since it is larger than the sum of its proper divisors (1).

12131233313281 is an equidigital number, since it uses as much as digits as its factorization.

12131233313281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 34.

The spelling of 12131233313281 in words is "twelve trillion, one hundred thirty-one billion, two hundred thirty-three million, three hundred thirteen thousand, two hundred eighty-one".