It is a semiprime because it is the product of two primes.
Almost surely, 2121210118016698 is an apocalyptic number.
121210118016698 is an equidigital number, since it uses as much as digits as its factorization.
121210118016698 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 60605059008351.
The spelling of 121210118016698 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred eighteen million, sixteen thousand, six hundred ninety-eight".