Adding to 121000011120161 its reverse (161021110000121), we get a palindrome (282021121120282).
It is a weak prime.
It is a cyclic number.
Almost surely, 2121000011120161 is an apocalyptic number.
It is an amenable number.
121000011120161 is an equidigital number, since it uses as much as digits as its factorization.
121000011120161 is an odious number, because the sum of its binary digits is odd.
The spelling of 121000011120161 in words is "one hundred twenty-one trillion, eleven million, one hundred twenty thousand, one hundred sixty-one".