Adding to 12101010100121 its reverse (12100101010121), we get a palindrome (24201111110242).
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a Duffinian number.
Almost surely, 212101010100121 is an apocalyptic number.
It is an amenable number.
12101010100121 is a wasteful number, since it uses less digits than its factorization.
12101010100121 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2657810443.
The spelling of 12101010100121 in words is "twelve trillion, one hundred one billion, ten million, one hundred thousand, one hundred twenty-one".