13321311020 has 12 divisors (see below), whose sum is σ = 27974753184. Its totient is φ = 5328524400.

The previous prime is 13321310969. The next prime is 13321311071. The reversal of 13321311020 is 2011312331.

It is an interprime number because it is at equal distance from previous prime (13321310969) and next prime (13321311071).

It is a self number, because there is not a number n which added to its sum of digits gives 13321311020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333032756 + ... + 333032795.

It is an arithmetic number, because the mean of its divisors is an integer number (2331229432).

Almost surely, 2^13321311020 is an apocalyptic number.

13321311020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13321311020 is an abundant number, since it is smaller than the sum of its proper divisors (14653442164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13321311020 is a wasteful number, since it uses less digits than its factorization.

13321311020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666065560 (or 666065558 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 13321311020 its reverse (2011312331), we get a palindrome (15332623351).

The spelling of 13321311020 in words is "thirteen billion, three hundred twenty-one million, three hundred eleven thousand, twenty".