Adding to 22220 its reverse (2222), we get a palindrome (24442).
It is a plaindrome in base 16.
It is a nialpdrome in base 10.
22220 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
222220 is an apocalyptic number.
22220 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 22220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25704).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
22220 is a wasteful number, since it uses less digits than its factorization.
22220 is an evil number, because the sum of its binary digits is even.
The square root of 22220 is about 149.0637447537. The cubic root of 22220 is about 28.1134849981.
The spelling of 22220 in words is "twenty-two thousand, two hundred twenty", and thus it is an iban number.