13112321200 has 120 divisors (see below), whose sum is σ = 34479619056. Its totient is φ = 4752384000.

The previous prime is 13112321191. The next prime is 13112321207. The reversal of 13112321200 is 212321131.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (13112321207) 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, 1372440 + ... + 1381960.

Almost surely, 2^13112321200 is an apocalyptic number.

13112321200 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 13112321200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17239809528).

13112321200 is an abundant number, since it is smaller than the sum of its proper divisors (21367297856).

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

13112321200 is a wasteful number, since it uses less digits than its factorization.

13112321200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9863 (or 9852 counting only the distinct ones).

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

Adding to 13112321200 its reverse (212321131), we get a palindrome (13324642331).

The spelling of 13112321200 in words is "thirteen billion, one hundred twelve million, three hundred twenty-one thousand, two hundred".