Adding to 100021010120010 its reverse (10021010120001), we get a palindrome (110042020240011).
Subtracting from 100021010120010 its reverse (10021010120001), we obtain a palindrome (90000000000009).
It is a happy number.
It is a Curzon number.
It is an unprimeable number.
Almost surely, 2100021010120010 is an apocalyptic number.
100021010120010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
100021010120010 is a wasteful number, since it uses less digits than its factorization.
100021010120010 is an odious number, because the sum of its binary digits is odd.
The spelling of 100021010120010 in words is "one hundred trillion, twenty-one billion, ten million, one hundred twenty thousand, ten".