Adding to 220220 its reverse (22022), we get a palindrome (242242).
It is a congruent number.
It is an unprimeable number.
2220220 is an apocalyptic number.
220220 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 220220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312816).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
220220 is a wasteful number, since it uses less digits than its factorization.
220220 is an evil number, because the sum of its binary digits is even.
The square root of 220220 is about 469.2760381694. The cubic root of 220220 is about 60.3882233666.
The spelling of 220220 in words is "two hundred twenty thousand, two hundred twenty", and thus it is an iban number.