Adding to 223212 its reverse (212322), we get a palindrome (435534).
It is a nude number because it is divisible by every one of its digits.
It is a nialpdrome in base 12.
2223212 is an apocalyptic number.
223212 is a gapful number since it is divisible by the number (22) 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 223212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302400).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
223212 is a wasteful number, since it uses less digits than its factorization.
223212 is an evil number, because the sum of its binary digits is even.
The square root of 223212 is about 472.4531722827. The cubic root of 223212 is about 60.6604805242.
The spelling of 223212 in words is "two hundred twenty-three thousand, two hundred twelve", and thus it is an iban number.