11121203200 has 144 divisors (see below), whose sum is σ = 27916728840. Its totient is φ = 4393205760.

The previous prime is 11121203189. The next prime is 11121203201. The reversal of 11121203200 is 230212111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121203201) 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, 4248292 + ... + 4250908.

Almost surely, 2^11121203200 is an apocalyptic number.

11121203200 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 11121203200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13958364420).

11121203200 is an abundant number, since it is smaller than the sum of its proper divisors (16795525640).

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

11121203200 is an equidigital number, since it uses as much as digits as its factorization.

11121203200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2732 (or 2707 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 11121203200 its reverse (230212111), we get a palindrome (11351415311).

The spelling of 11121203200 in words is "eleven billion, one hundred twenty-one million, two hundred three thousand, two hundred".