1313130110021 has 2 divisors, whose sum is σ = 1313130110022. Its totient is φ = 1313130110020.

The previous prime is 1313130109997. The next prime is 1313130110029. The reversal of 1313130110021 is 1200110313131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1181321176996 + 131808933025 = 1086886^2 + 363055^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313130110021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313130110029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656565055010 + 656565055011.

It is an arithmetic number, because the mean of its divisors is an integer number (656565055011).

Almost surely, 2^{1313130110021} is an apocalyptic number.

It is an amenable number.

1313130110021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313130110021 is an equidigital number, since it uses as much as digits as its factorization.

1313130110021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 1313130110021 its reverse (1200110313131), we get a palindrome (2513240423152).

The spelling of 1313130110021 in words is "one trillion, three hundred thirteen billion, one hundred thirty million, one hundred ten thousand, twenty-one".