13203221311 has 16 divisors (see below), whose sum is σ = 15361381888. Its totient is φ = 11113653600.

The previous prime is 13203221287. The next prime is 13203221329. The reversal of 13203221311 is 11312230231.

It is a de Polignac number, because none of the positive numbers 2^k-13203221311 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 (13203225311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244936 + ... + 293938.

It is an arithmetic number, because the mean of its divisors is an integer number (960086368).

Almost surely, 2^13203221311 is an apocalyptic number.

13203221311 is a deficient number, since it is larger than the sum of its proper divisors (2158160577).

13203221311 is an equidigital number, since it uses as much as digits as its factorization.

13203221311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49702.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13203221311 its reverse (11312230231), we get a palindrome (24515451542).

The spelling of 13203221311 in words is "thirteen billion, two hundred three million, two hundred twenty-one thousand, three hundred eleven".