Multipling 219122 by its product of digits (72), we get a square (15776784 = 39722).
219122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is an ABA number since it can be written as A⋅BA, here for A=2, B=331.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 219122.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 219122.
It is an unprimeable number.
2219122 is an apocalyptic number.
219122 is an frugal number, since it uses more digits than its factorization.
219122 is an evil number, because the sum of its binary digits is even.
The square root of 219122 is about 468.1046891455. The cubic root of 219122 is about 60.2876924205.
The spelling of 219122 in words is "two hundred nineteen thousand, one hundred twenty-two".