1121233200 has 120 divisors (see below), whose sum is σ = 3688902288. Its totient is φ = 290903040.

The previous prime is 1121233199. The next prime is 1121233229. The reversal of 1121233200 is 23321211.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1121233200.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31774 + ... + 57026.

Almost surely, 2^1121233200 is an apocalyptic number.

1121233200 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 1121233200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1844451144).

1121233200 is an abundant number, since it is smaller than the sum of its proper divisors (2567669088).

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

1121233200 is a wasteful number, since it uses less digits than its factorization.

1121233200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25311 (or 25300 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1121233200 is about 33484.8204415075. The cubic root of 1121233200 is about 1038.8798343565.

Adding to 1121233200 its reverse (23321211), we get a palindrome (1144554411).

The spelling of 1121233200 in words is "one billion, one hundred twenty-one million, two hundred thirty-three thousand, two hundred".