220500 is nontrivially palindromic in base 13.
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is a nialpdrome in base 12.
It is a congruent number.
It is an unprimeable number.
2220500 is an apocalyptic number.
220500 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 220500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404586).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
220500 is a wasteful number, since it uses less digits than its factorization.
220500 is an evil number, because the sum of its binary digits is even.
The square root of 220500 is about 469.5742752750. The cubic root of 220500 is about 60.4138061798.
Multiplying 220500 by its product of nonzero digits (20), we get a square (4410000 = 21002).
220500 divided by its product of nonzero digits (20) gives a square (11025 = 1052).
Adding to 220500 its reverse (5022), we get a palindrome (225522).
The spelling of 220500 in words is "two hundred twenty thousand, five hundred".