13221103320 has 96 divisors (see below), whose sum is σ = 45496170720. Its totient is φ = 3318236160.

The previous prime is 13221103307. The next prime is 13221103349. The reversal of 13221103320 is 2330112231.

13221103320 is a `hidden beast` number, since 1 + 322 + 1 + 10 + 332 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13221103293 and 13221103302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1074036 + ... + 1086275.

It is an arithmetic number, because the mean of its divisors is an integer number (473918445).

Almost surely, 2^13221103320 is an apocalyptic number.

13221103320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13221103320 is an abundant number, since it is smaller than the sum of its proper divisors (32275067400).

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

13221103320 is a wasteful number, since it uses less digits than its factorization.

13221103320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160345 (or 2160338 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13221103320 its reverse (2330112231), we get a palindrome (15551215551).

The spelling of 13221103320 in words is "thirteen billion, two hundred twenty-one million, one hundred three thousand, three hundred twenty".