Adding to 101210221121120 its reverse (21121122012101), we get a palindrome (122331343133221).
It is a congruent number.
Almost surely, 2101210221121120 is an apocalyptic number.
101210221121120 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 practical number, because each smaller number is the sum of distinct divisors of 101210221121120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120026220688080).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
101210221121120 is a wasteful number, since it uses less digits than its factorization.
101210221121120 is an odious number, because the sum of its binary digits is odd.
The spelling of 101210221121120 in words is "one hundred one trillion, two hundred ten billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred twenty".