Adding to 12012122010020 its reverse (2001022121021), we get a palindrome (14013144131041).
12012122010020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is an unprimeable number.
Almost surely, 212012122010020 is an apocalyptic number.
12012122010020 is a gapful number since it is divisible by the number (10) 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.
12012122010020 is a wasteful number, since it uses less digits than its factorization.
12012122010020 is an evil number, because the sum of its binary digits is even.
The spelling of 12012122010020 in words is "twelve trillion, twelve billion, one hundred twenty-two million, ten thousand, twenty".