13311303121 has 4 divisors (see below), whose sum is σ = 13313755044. Its totient is φ = 13308851200.

The previous prime is 13311303077. The next prime is 13311303133. The reversal of 13311303121 is 12130311331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9987204096 + 3324099025 = 99936^2 + 57655^2 .

It is a cyclic number.

It is not a de Polignac number, because 13311303121 - 2²¹ = 13309205969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13311304121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1217800 + ... + 1228681.

It is an arithmetic number, because the mean of its divisors is an integer number (3328438761).

Almost surely, 2^13311303121 is an apocalyptic number.

It is an amenable number.

13311303121 is a deficient number, since it is larger than the sum of its proper divisors (2451923).

13311303121 is an equidigital number, since it uses as much as digits as its factorization.

13311303121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451922.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 13311303121 its reverse (12130311331), we get a palindrome (25441614452).

The spelling of 13311303121 in words is "thirteen billion, three hundred eleven million, three hundred three thousand, one hundred twenty-one".