It is a sphenic number, since it is the product of 3 distinct primes.
It is a Duffinian number.
It is a congruent number.
Almost surely, 221211010219999 is an apocalyptic number.
21211010219999 is a wasteful number, since it uses less digits than its factorization.
21211010219999 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2200084381.
The spelling of 21211010219999 in words is "twenty-one trillion, two hundred eleven billion, ten million, two hundred nineteen thousand, nine hundred ninety-nine".