It is a happy number.
It is a plaindrome in base 11 and base 16.
222120 is an apocalyptic number.
22120 is a gapful number since it is divisible by the number (20) 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 22120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28800).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
22120 is a wasteful number, since it uses less digits than its factorization.
22120 is an odious number, because the sum of its binary digits is odd.
The square root of 22120 is about 148.7279395406. The cubic root of 22120 is about 28.0712471265.
Adding to 22120 its reverse (2122), we get a palindrome (24242).
The spelling of 22120 in words is "twenty-two thousand, one hundred twenty", and thus it is an iban number.