Adding to 21100223210311 its reverse (11301232200112), we get a palindrome (32401455410423).
It is a sphenic number, since it is the product of 3 distinct primes.
It is a Duffinian number.
It is a congruent number.
Almost surely, 221100223210311 is an apocalyptic number.
21100223210311 is an equidigital number, since it uses as much as digits as its factorization.
21100223210311 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 87196421.
The spelling of 21100223210311 in words is "twenty-one trillion, one hundred billion, two hundred twenty-three million, two hundred ten thousand, three hundred eleven".