It is a nude number because it is divisible by every one of its digits.
It is a zygodrome in base 2.
It is a congruent number.
211968 is a Friedman number, since it can be written as 92*(8*6)^(1+1), using all its digits and the basic arithmetic operations.
2211968 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 211968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319332).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
211968 is a wasteful number, since it uses less digits than its factorization.
211968 is an evil number, because the sum of its binary digits is even.
The square root of 211968 is about 460.3998262380. The cubic root of 211968 is about 59.6243193098.
The spelling of 211968 in words is "two hundred eleven thousand, nine hundred sixty-eight".