It is a happy number.
It is a weak prime.
It is a cyclic number.
It is a congruent number.
Almost surely, 2101211101112181 is an apocalyptic number.
It is an amenable number.
101211101112181 is an equidigital number, since it uses as much as digits as its factorization.
101211101112181 is an odious number, because the sum of its binary digits is odd.
Adding to 101211101112181 its reverse (181211101112101), we get a palindrome (282422202224282).
The spelling of 101211101112181 in words is "one hundred one trillion, two hundred eleven billion, one hundred one million, one hundred twelve thousand, one hundred eighty-one".