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, 2102102211102021 is an apocalyptic number.
It is an amenable number.
102102211102021 is an equidigital number, since it uses as much as digits as its factorization.
102102211102021 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7854016238630.
Adding to 102102211102021 its reverse (120201112201201), we get a palindrome (222303323303222).
The spelling of 102102211102021 in words is "one hundred two trillion, one hundred two billion, two hundred eleven million, one hundred two thousand, twenty-one".