Adding to 100121020211101 its reverse (101112020121001), we get a palindrome (201233040332102).
It is a happy number.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a Duffinian number.
It is a congruent number.
Almost surely, 2100121020211101 is an apocalyptic number.
It is an amenable number.
100121020211101 is an equidigital number, since it uses as much as digits as its factorization.
100121020211101 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1827981310.
The spelling of 100121020211101 in words is "one hundred trillion, one hundred twenty-one billion, twenty million, two hundred eleven thousand, one hundred one".