It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a Duffinian number.
Almost surely, 212020020211987 is an apocalyptic number.
12020020211987 is an equidigital number, since it uses as much as digits as its factorization.
12020020211987 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1312668348.
The spelling of 12020020211987 in words is "twelve trillion, twenty billion, twenty million, two hundred eleven thousand, nine hundred eighty-seven".