It is a nude number because it is divisible by every one of its digits.
It is a congruent number.
Almost surely, 211121824 is an apocalyptic number.
11121824 is a gapful number since it is divisible by the number (14) 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 11121824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13121514).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11121824 is a wasteful number, since it uses less digits than its factorization.
11121824 is an evil number, because the sum of its binary digits is even.
The square root of 11121824 is about 3334.9398795181. The cubic root of 11121824 is about 223.2160092661.
Adding to 11121824 its reverse (42812111), we get a palindrome (53933935).
The spelling of 11121824 in words is "eleven million, one hundred twenty-one thousand, eight hundred twenty-four".