13303121213 has 4 divisors (see below), whose sum is σ = 13303664220. Its totient is φ = 13302578208.

The previous prime is 13303121207. The next prime is 13303121239. The reversal of 13303121213 is 31212130331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31212130331 = 168863 ⋅184837.

It can be written as a sum of positive squares in 2 ways, for example, as 2607838489 + 10695282724 = 51067^2 + 103418^2 .

It is a cyclic number.

It is not a de Polignac number, because 13303121213 - 2¹⁰ = 13303120189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13303121203) 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, 232928 + ... + 284361.

It is an arithmetic number, because the mean of its divisors is an integer number (3325916055).

Almost surely, 2^13303121213 is an apocalyptic number.

It is an amenable number.

13303121213 is a deficient number, since it is larger than the sum of its proper divisors (543007).

13303121213 is an equidigital number, since it uses as much as digits as its factorization.

13303121213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543006.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 13303121213 its reverse (31212130331), we get a palindrome (44515251544).

The spelling of 13303121213 in words is "thirteen billion, three hundred three million, one hundred twenty-one thousand, two hundred thirteen".