It is a strong prime.
It is a cyclic number.
It is a plaindrome in base 16.
It is a nialpdrome in base 9.
It is a zygodrome in base 9.
222123 is an apocalyptic number.
22123 is an equidigital number, since it uses as much as digits as its factorization.
22123 is an odious number, because the sum of its binary digits is odd.
The square root of 22123 is about 148.7380247280. The cubic root of 22123 is about 28.0725161128.
Adding to 22123 its reverse (32122), we get a palindrome (54245).
Subtracting 22123 from its reverse (32122), we obtain a palindrome (9999).
The spelling of 22123 in words is "twenty-two thousand, one hundred twenty-three", and thus it is an iban number.