13331221100 has 36 divisors (see below), whose sum is σ = 29419080600. Its totient is φ = 5242104960.

The previous prime is 13331221063. The next prime is 13331221103. The reversal of 13331221100 is 112213331.

It is not an unprimeable number, because it can be changed into a prime (13331221103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1123865 + ... + 1135664.

Almost surely, 2^13331221100 is an apocalyptic number.

13331221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13331221100 is an abundant number, since it is smaller than the sum of its proper divisors (16087859500).

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

13331221100 is a wasteful number, since it uses less digits than its factorization.

13331221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259602 (or 2259595 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 13331221100 its reverse (112213331), we get a palindrome (13443434431).

The spelling of 13331221100 in words is "thirteen billion, three hundred thirty-one million, two hundred twenty-one thousand, one hundred".