212085716868 is a `hidden beast` number, since 2 + 1 + 2 + 0 + 8 + 571 + 6 + 8 + 68 = 666.
It is an unprimeable number.
Almost surely, 2212085716868 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 212085716868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285364386216).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
212085716868 is a wasteful number, since it uses less digits than its factorization.
212085716868 is an odious number, because the sum of its binary digits is odd.
The spelling of 212085716868 in words is "two hundred twelve billion, eighty-five million, seven hundred sixteen thousand, eight hundred sixty-eight".