It is an Ulam number.
It is a self number, because there is not a number n which added to its sum of digits gives 1101100.
21101100 is an apocalyptic number.
1101100 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 1101100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1616216).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1101100 is a wasteful number, since it uses less digits than its factorization.
1101100 is an odious number, because the sum of its binary digits is odd.
The square root of 1101100 is about 1049.3331215586. Note that the first 3 decimals coincide. The cubic root of 1101100 is about 103.2624094194.
Adding to 1101100 its reverse (11011), we get a palindrome (1112111).
Multiplying 1101100 by its reverse (11011), we get a square (12124212100 = 1101102).
1101100 divided by its reverse (11011) gives a square (100 = 102).
The spelling of 1101100 in words is "one million, one hundred one thousand, one hundred".