13331222500 has 60 divisors (see below), whose sum is σ = 29703063852. Its totient is φ = 5231824000.

The previous prime is 13331222473. The next prime is 13331222521. The reversal of 13331222500 is 522213331.

It can be written as a sum of positive squares in 10 ways, for example, as 7825879296 + 5505343204 = 88464^2 + 74198^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 82194 + ... + 182806.

Almost surely, 2^13331222500 is an apocalyptic number.

13331222500 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 13331222500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14851531926).

13331222500 is an abundant number, since it is smaller than the sum of its proper divisors (16371841352).

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

13331222500 is a wasteful number, since it uses less digits than its factorization.

13331222500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100690 (or 100673 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 13331222500 its reverse (522213331), we get a palindrome (13853435831).

The spelling of 13331222500 in words is "thirteen billion, three hundred thirty-one million, two hundred twenty-two thousand, five hundred".