13204111220 has 24 divisors (see below), whose sum is σ = 28684794600. Its totient is φ = 5099518592.

The previous prime is 13204111177. The next prime is 13204111231. The reversal of 13204111220 is 2211140231.

It can be written as a sum of positive squares in 4 ways, for example, as 25989604 + 13178121616 = 5098^2 + 114796^2 .

It is a super-2 number, since 2×13204111220² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11382275 + ... + 11383434.

It is an arithmetic number, because the mean of its divisors is an integer number (1195199775).

Almost surely, 2^13204111220 is an apocalyptic number.

13204111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13204111220 is an abundant number, since it is smaller than the sum of its proper divisors (15480683380).

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

13204111220 is a wasteful number, since it uses less digits than its factorization.

13204111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22765747 (or 22765745 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 13204111220 its reverse (2211140231), we get a palindrome (15415251451).

The spelling of 13204111220 in words is "thirteen billion, two hundred four million, one hundred eleven thousand, two hundred twenty".