It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-12203222121223 is a prime.
It is a Duffinian number.
It is a congruent number.
Almost surely, 212203222121223 is an apocalyptic number.
12203222121223 is an equidigital number, since it uses as much as digits as its factorization.
12203222121223 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1743317445896.
Adding to 12203222121223 its reverse (32212122230221), we get a palindrome (44415344351444).
The spelling of 12203222121223 in words is "twelve trillion, two hundred three billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-three".