Adding to 212660 its reverse (66212), we get a palindrome (278872).
212660 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a congruent number.
212660 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2212660 is an apocalyptic number.
212660 is a gapful number since it is divisible by the number (20) 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 212660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268800).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
212660 is a wasteful number, since it uses less digits than its factorization.
212660 is an odious number, because the sum of its binary digits is odd.
The square root of 212660 is about 461.1507345760. The cubic root of 212660 is about 59.6891328830.
The spelling of 212660 in words is "two hundred twelve thousand, six hundred sixty".