13121303329 has 2 divisors, whose sum is σ = 13121303330. Its totient is φ = 13121303328.

The previous prime is 13121303311. The next prime is 13121303387. The reversal of 13121303329 is 92330312131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13099260304 + 22043025 = 114452^2 + 4695^2 .

It is a cyclic number.

It is not a de Polignac number, because 13121303329 - 2⁵ = 13121303297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13121303297 and 13121303306.

It is not a weakly prime, because it can be changed into another prime (13121303729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560651664 + 6560651665.

It is an arithmetic number, because the mean of its divisors is an integer number (6560651665).

Almost surely, 2^13121303329 is an apocalyptic number.

It is an amenable number.

13121303329 is a deficient number, since it is larger than the sum of its proper divisors (1).

13121303329 is an equidigital number, since it uses as much as digits as its factorization.

13121303329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 28.

The spelling of 13121303329 in words is "thirteen billion, one hundred twenty-one million, three hundred three thousand, three hundred twenty-nine".