It is a plaindrome in base 16.
It is a congruent number.
21120120 is an apocalyptic number.
1120120 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 1120120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1292760).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1120120 is a wasteful number, since it uses less digits than its factorization.
1120120 is an evil number, because the sum of its binary digits is even.
The square root of 1120120 is about 1058.3572175783. The cubic root of 1120120 is about 103.8535908289.
Adding to 1120120 its reverse (210211), we get a palindrome (1330331).
Subtracting from 1120120 its reverse (210211), we obtain a palindrome (909909).
The spelling of 1120120 in words is "one million, one hundred twenty thousand, one hundred twenty".