13211112220 has 48 divisors (see below), whose sum is σ = 28142442720. Its totient is φ = 5208523776.

The previous prime is 13211112169. The next prime is 13211112259. The reversal of 13211112220 is 2221111231.

It is a junction number, because it is equal to n+sod(n) for n = 13211112194 and 13211112203.

It is a congruent number.

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, 3608751 + ... + 3612409.

It is an arithmetic number, because the mean of its divisors is an integer number (586300890).

Almost surely, 2^13211112220 is an apocalyptic number.

13211112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13211112220 is an abundant number, since it is smaller than the sum of its proper divisors (14931330500).

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

13211112220 is a wasteful number, since it uses less digits than its factorization.

13211112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6214 (or 6212 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 13211112220 its reverse (2221111231), we get a palindrome (15432223451).

The spelling of 13211112220 in words is "thirteen billion, two hundred eleven million, one hundred twelve thousand, two hundred twenty".