It is a happy number.
It is an unprimeable number.
Almost surely, 2212021100200 is an apocalyptic number.
212021100200 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 pseudoperfect number, because it is the sum of a subset of its proper divisors.
212021100200 is a wasteful number, since it uses less digits than its factorization.
212021100200 is an evil number, because the sum of its binary digits is even.
Adding to 212021100200 its reverse (2001120212), we get a palindrome (214022220412).
The spelling of 212021100200 in words is "two hundred twelve billion, twenty-one million, one hundred thousand, two hundred".