11121311200 has 72 divisors (see below), whose sum is σ = 27610185960. Its totient is φ = 4373107200.

The previous prime is 11121311177. The next prime is 11121311203. The reversal of 11121311200 is 211312111.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121311203) 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, 70611 + ... + 165010.

It is an arithmetic number, because the mean of its divisors is an integer number (383474805).

Almost surely, 2^11121311200 is an apocalyptic number.

11121311200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11121311200 is an abundant number, since it is smaller than the sum of its proper divisors (16488874760).

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

11121311200 is a wasteful number, since it uses less digits than its factorization.

11121311200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235700 (or 235687 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11121311200 its reverse (211312111), we get a palindrome (11332623311).

The spelling of 11121311200 in words is "eleven billion, one hundred twenty-one million, three hundred eleven thousand, two hundred".