It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 12066365351021.
It is a congruent number.
Almost surely, 212066365351021 is an apocalyptic number.
It is an amenable number.
12066365351021 is an equidigital number, since it uses as much as digits as its factorization.
12066365351021 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 37766478.
The spelling of 12066365351021 in words is "twelve trillion, sixty-six billion, three hundred sixty-five million, three hundred fifty-one thousand, twenty-one".