Adding to 11213120 its reverse (2131211), we get a palindrome (13344331).
It is a congruent number.
Almost surely, 211213120 is an apocalyptic number.
11213120 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 11213120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13575792).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11213120 is an equidigital number, since it uses as much as digits as its factorization.
11213120 is an odious number, because the sum of its binary digits is odd.
The square root of 11213120 is about 3348.5997073404. The cubic root of 11213120 is about 223.8251186041.
The spelling of 11213120 in words is "eleven million, two hundred thirteen thousand, one hundred twenty".