It is a congruent number.
It is an unprimeable number.
Almost surely, 220203021213012 is an apocalyptic number.
20203021213012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20203021213012 is a wasteful number, since it uses less digits than its factorization.
20203021213012 is an odious number, because the sum of its binary digits is odd.
Adding to 20203021213012 its reverse (21031212030202), we get a palindrome (41234233243214).
The spelling of 20203021213012 in words is "twenty trillion, two hundred three billion, twenty-one million, two hundred thirteen thousand, twelve".