13112312200 has 96 divisors (see below), whose sum is σ = 32860787400. Its totient is φ = 4837109760.

The previous prime is 13112312197. The next prime is 13112312207. The reversal of 13112312200 is 221321131.

It can be written as a sum of positive squares in 12 ways, for example, as 249576804 + 12862735396 = 15798^2 + 113414^2 .

It is not an unprimeable number, because it can be changed into a prime (13112312207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5024496 + ... + 5027104.

Almost surely, 2^13112312200 is an apocalyptic number.

13112312200 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 13112312200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16430393700).

13112312200 is an abundant number, since it is smaller than the sum of its proper divisors (19748475200).

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

13112312200 is a wasteful number, since it uses less digits than its factorization.

13112312200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4571 (or 4562 counting only the distinct ones).

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

Adding to 13112312200 its reverse (221321131), we get a palindrome (13333633331).

The spelling of 13112312200 in words is "thirteen billion, one hundred twelve million, three hundred twelve thousand, two hundred".