13203111220 has 48 divisors (see below), whose sum is σ = 30494677248. Its totient is φ = 4771267200.

The previous prime is 13203111169. The next prime is 13203111221. The reversal of 13203111220 is 2211130231.

It is a junction number, because it is equal to n+sod(n) for n = 13203111194 and 13203111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13203111221) 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, 528006 + ... + 552445.

It is an arithmetic number, because the mean of its divisors is an integer number (635305776).

Almost surely, 2^13203111220 is an apocalyptic number.

13203111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13203111220 is an abundant number, since it is smaller than the sum of its proper divisors (17291566028).

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

13203111220 is a wasteful number, since it uses less digits than its factorization.

13203111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080520 (or 1080518 counting only the distinct ones).

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

Adding to 13203111220 its reverse (2211130231), we get a palindrome (15414241451).

The spelling of 13203111220 in words is "thirteen billion, two hundred three million, one hundred eleven thousand, two hundred twenty".