1113321120 has 96 divisors (see below), whose sum is σ = 3601801728. Its totient is φ = 288857088.

The previous prime is 1113321113. The next prime is 1113321149. The reversal of 1113321120 is 211233111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

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 1113321120.

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, 13584 + ... + 49103.

It is an arithmetic number, because the mean of its divisors is an integer number (37518768).

Almost surely, 2^1113321120 is an apocalyptic number.

1113321120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1113321120 is an abundant number, since it is smaller than the sum of its proper divisors (2488480608).

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

1113321120 is a wasteful number, since it uses less digits than its factorization.

1113321120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62742 (or 62734 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1113321120 is about 33366.4669990696. The cubic root of 1113321120 is about 1036.4304150148.

Adding to 1113321120 its reverse (211233111), we get a palindrome (1324554231).

The spelling of 1113321120 in words is "one billion, one hundred thirteen million, three hundred twenty-one thousand, one hundred twenty".