Adding to 212312 its reverse (213212), we get a palindrome (425524).
Subtracting 212312 from its reverse (213212), we obtain a square (900 = 302).
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (8).
It is a congruent number.
It is an unprimeable number.
212312 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2212312 is an apocalyptic number.
It is an amenable number.
212312 is a wasteful number, since it uses less digits than its factorization.
212312 is an evil number, because the sum of its binary digits is even.
The square root of 212312 is about 460.7732631132. The cubic root of 212312 is about 59.6565563774.
The spelling of 212312 in words is "two hundred twelve thousand, three hundred twelve", and thus it is an iban number.