13323021220 has 48 divisors (see below), whose sum is σ = 28427011200. Its totient is φ = 5244086016.

The previous prime is 13323021211. The next prime is 13323021241. The reversal of 13323021220 is 2212032331.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 636481 + ... + 657079.

It is an arithmetic number, because the mean of its divisors is an integer number (592229400).

Almost surely, 2^13323021220 is an apocalyptic number.

13323021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13323021220 is an abundant number, since it is smaller than the sum of its proper divisors (15103989980).

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

13323021220 is a wasteful number, since it uses less digits than its factorization.

13323021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21124 (or 21122 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 13323021220 its reverse (2212032331), we get a palindrome (15535053551).

The spelling of 13323021220 in words is "thirteen billion, three hundred twenty-three million, twenty-one thousand, two hundred twenty".