13260433321 has 2 divisors, whose sum is σ = 13260433322. Its totient is φ = 13260433320.

The previous prime is 13260433297. The next prime is 13260433391. The reversal of 13260433321 is 12333406231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11285875225 + 1974558096 = 106235^2 + 44436^2 .

It is a cyclic number.

It is not a de Polignac number, because 13260433321 - 2¹⁵ = 13260400553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13260433321.

It is not a weakly prime, because it can be changed into another prime (13260433391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6630216660 + 6630216661.

It is an arithmetic number, because the mean of its divisors is an integer number (6630216661).

Almost surely, 2^13260433321 is an apocalyptic number.

It is an amenable number.

13260433321 is a deficient number, since it is larger than the sum of its proper divisors (1).

13260433321 is an equidigital number, since it uses as much as digits as its factorization.

13260433321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 13260433321 its reverse (12333406231), we get a palindrome (25593839552).

The spelling of 13260433321 in words is "thirteen billion, two hundred sixty million, four hundred thirty-three thousand, three hundred twenty-one".