1109201100 has 72 divisors (see below), whose sum is σ = 3667765248. Its totient is φ = 253531200.

The previous prime is 1109201099. The next prime is 1109201101. The reversal of 1109201100 is 11029011.

It is an interprime number because it is at equal distance from previous prime (1109201099) and next prime (1109201101).

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 1109201100.

It is not an unprimeable number, because it can be changed into a prime (1109201101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 261996 + ... + 266195.

It is an arithmetic number, because the mean of its divisors is an integer number (50941184).

Almost surely, 2^1109201100 is an apocalyptic number.

1109201100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1109201100 is an abundant number, since it is smaller than the sum of its proper divisors (2558564148).

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

1109201100 is a wasteful number, since it uses less digits than its factorization.

1109201100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528215 (or 528208 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 15.

The square root of 1109201100 is about 33304.6708435919. The cubic root of 1109201100 is about 1035.1503433962.

The spelling of 1109201100 in words is "one billion, one hundred nine million, two hundred one thousand, one hundred".