It is a happy number.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120512411342 = 2 ⋅60256205671.
It is a cyclic number.
It is a Duffinian number.
It is a congruent number.
Almost surely, 2243114215021 is an apocalyptic number.
It is an amenable number.
243114215021 is an equidigital number, since it uses as much as digits as its factorization.
243114215021 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 378094290.
Adding to 243114215021 its reverse (120512411342), we get a palindrome (363626626363).
The spelling of 243114215021 in words is "two hundred forty-three billion, one hundred fourteen million, two hundred fifteen thousand, twenty-one".