13112013220 has 48 divisors (see below), whose sum is σ = 28293914880. Its totient is φ = 5101318656.

The previous prime is 13112013209. The next prime is 13112013227. The reversal of 13112013220 is 2231021131.

It is a junction number, because it is equal to n+sod(n) for n = 13112013194 and 13112013203.

It is not an unprimeable number, because it can be changed into a prime (13112013227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173644 + ... + 237436.

It is an arithmetic number, because the mean of its divisors is an integer number (589456560).

Almost surely, 2^13112013220 is an apocalyptic number.

13112013220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13112013220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14146957440).

13112013220 is an abundant number, since it is smaller than the sum of its proper divisors (15181901660).

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

13112013220 is a wasteful number, since it uses less digits than its factorization.

13112013220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64084 (or 64082 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13112013220 its reverse (2231021131), we get a palindrome (15343034351).

The spelling of 13112013220 in words is "thirteen billion, one hundred twelve million, thirteen thousand, two hundred twenty".