It is a cyclic number.
It is a congruent number.
It is an unprimeable number.
Almost surely, 212020020212005 is an apocalyptic number.
It is an amenable number.
12020020212005 is a wasteful number, since it uses less digits than its factorization.
12020020212005 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8040147340.
Adding to 12020020212005 its reverse (50021202002021), we get a palindrome (62041222214026).
The spelling of 12020020212005 in words is "twelve trillion, twenty billion, twenty million, two hundred twelve thousand, five".