1103320120 has 256 divisors, whose sum is σ = 3185049600. Its totient is φ = 335301120.

The previous prime is 1103320103. The next prime is 1103320123. The reversal of 1103320120 is 210233011.

It is a self number, because there is not a number n which added to its sum of digits gives 1103320120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103320123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8687497 + ... + 8687623.

It is an arithmetic number, because the mean of its divisors is an integer number (12441600).

Almost surely, 2^1103320120 is an apocalyptic number.

1103320120 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 1103320120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1592524800).

1103320120 is an abundant number, since it is smaller than the sum of its proper divisors (2081729480).

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

1103320120 is a wasteful number, since it uses less digits than its factorization.

1103320120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1103320120 is about 33216.2628843162. The cubic root of 1103320120 is about 1033.3176461950.

Adding to 1103320120 its reverse (210233011), we get a palindrome (1313553131).

The spelling of 1103320120 in words is "one billion, one hundred three million, three hundred twenty thousand, one hundred twenty".