13021320337 has 2 divisors, whose sum is σ = 13021320338. Its totient is φ = 13021320336.

The previous prime is 13021320283. The next prime is 13021320359. The reversal of 13021320337 is 73302312031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13021320321 + 16 = 114111^2 + 4^2 .

It is a cyclic number.

It is not a de Polignac number, because 13021320337 - 2¹⁵ = 13021287569 is a prime.

It is not a weakly prime, because it can be changed into another prime (13021320397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6510660168 + 6510660169.

It is an arithmetic number, because the mean of its divisors is an integer number (6510660169).

Almost surely, 2^13021320337 is an apocalyptic number.

It is an amenable number.

13021320337 is a deficient number, since it is larger than the sum of its proper divisors (1).

13021320337 is an equidigital number, since it uses as much as digits as its factorization.

13021320337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 25.

Adding to 13021320337 its reverse (73302312031), we get a palindrome (86323632368).

The spelling of 13021320337 in words is "thirteen billion, twenty-one million, three hundred twenty thousand, three hundred thirty-seven".