1312233021137 has 2 divisors, whose sum is σ = 1312233021138. Its totient is φ = 1312233021136.

The previous prime is 1312233021119. The next prime is 1312233021179. The reversal of 1312233021137 is 7311203322131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 661450383616 + 650782637521 = 813296^2 + 806711^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312233021137 - 2²⁶ = 1312165912273 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312233021037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656116510568 + 656116510569.

It is an arithmetic number, because the mean of its divisors is an integer number (656116510569).

Almost surely, 2^{1312233021137} is an apocalyptic number.

It is an amenable number.

1312233021137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312233021137 is an equidigital number, since it uses as much as digits as its factorization.

1312233021137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

Adding to 1312233021137 its reverse (7311203322131), we get a palindrome (8623436343268).

The spelling of 1312233021137 in words is "one trillion, three hundred twelve billion, two hundred thirty-three million, twenty-one thousand, one hundred thirty-seven".