13231120220 has 12 divisors (see below), whose sum is σ = 27785352504. Its totient is φ = 5292448080.

The previous prime is 13231120187. The next prime is 13231120289. The reversal of 13231120220 is 2202113231.

It is a congruent number.

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, 330777986 + ... + 330778025.

It is an arithmetic number, because the mean of its divisors is an integer number (2315446042).

Almost surely, 2^13231120220 is an apocalyptic number.

13231120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13231120220 is an abundant number, since it is smaller than the sum of its proper divisors (14554232284).

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

13231120220 is a wasteful number, since it uses less digits than its factorization.

13231120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661556020 (or 661556018 counting only the distinct ones).

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

Adding to 13231120220 its reverse (2202113231), we get a palindrome (15433233451).

The spelling of 13231120220 in words is "thirteen billion, two hundred thirty-one million, one hundred twenty thousand, two hundred twenty".