Adding to 213422 its reverse (224312), we get a palindrome (437734).
213422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a congruent number.
It is an unprimeable number.
213422 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2213422 is an apocalyptic number.
213422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.
213422 is a wasteful number, since it uses less digits than its factorization.
213422 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 211.
The square root of 213422 is about 461.9761898626. The cubic root of 213422 is about 59.7603402913.
The spelling of 213422 in words is "two hundred thirteen thousand, four hundred twenty-two".