1100811120 has 80 divisors (see below), whose sum is σ = 3446377632. Its totient is φ = 290636800.

The previous prime is 1100811097. The next prime is 1100811133. The reversal of 1100811120 is 211180011.

It is a tau number, because it is divible by the number of its divisors (80).

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 1100811120.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1534 + ... + 46946.

Almost surely, 2^1100811120 is an apocalyptic number.

1100811120 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 1100811120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1723188816).

1100811120 is an abundant number, since it is smaller than the sum of its proper divisors (2345566512).

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

1100811120 is a wasteful number, since it uses less digits than its factorization.

1100811120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45530 (or 45524 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

The square root of 1100811120 is about 33178.4737442818. The cubic root of 1100811120 is about 1032.5337813132.

Adding to 1100811120 its reverse (211180011), we get a palindrome (1311991131).

The spelling of 1100811120 in words is "one billion, one hundred million, eight hundred eleven thousand, one hundred twenty".