212021121210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a self number, because there is not a number n which added to its sum of digits gives 212021121210.
It is an unprimeable number.
Almost surely, 2212021121210 is an apocalyptic number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
212021121210 is a wasteful number, since it uses less digits than its factorization.
212021121210 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 12839.
Adding to 212021121210 its reverse (12121120212), we get a palindrome (224142241422).
The spelling of 212021121210 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-one thousand, two hundred ten".