1121344120 has 64 divisors (see below), whose sum is σ = 2735288640. Its totient is φ = 411264000.

The previous prime is 1121344111. The next prime is 1121344171. The reversal of 1121344120 is 214431211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71380 + ... + 85660.

It is an arithmetic number, because the mean of its divisors is an integer number (42738885).

Almost surely, 2^1121344120 is an apocalyptic number.

1121344120 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 1121344120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1367644320).

1121344120 is an abundant number, since it is smaller than the sum of its proper divisors (1613944520).

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

1121344120 is a wasteful number, since it uses less digits than its factorization.

1121344120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14456 (or 14452 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1121344120 is about 33486.4766734274. The cubic root of 1121344120 is about 1038.9140909088.

Adding to 1121344120 its reverse (214431211), we get a palindrome (1335775331).

The spelling of 1121344120 in words is "one billion, one hundred twenty-one million, three hundred forty-four thousand, one hundred twenty".