13221310220 has 12 divisors (see below), whose sum is σ = 27764751504. Its totient is φ = 5288524080.

The previous prime is 13221310211. The next prime is 13221310241. The reversal of 13221310220 is 2201312231.

It is a super-3 number, since 3×13221310220³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330532736 + ... + 330532775.

It is an arithmetic number, because the mean of its divisors is an integer number (2313729292).

Almost surely, 2^13221310220 is an apocalyptic number.

13221310220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13221310220 is an abundant number, since it is smaller than the sum of its proper divisors (14543441284).

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

13221310220 is a wasteful number, since it uses less digits than its factorization.

13221310220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661065520 (or 661065518 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13221310220 its reverse (2201312231), we get a palindrome (15422622451).

The spelling of 13221310220 in words is "thirteen billion, two hundred twenty-one million, three hundred ten thousand, two hundred twenty".