12243223021 has 8 divisors (see below), whose sum is σ = 12895178400. Its totient is φ = 11592025200.

The previous prime is 12243223007. The next prime is 12243223033. The reversal of 12243223021 is 12032234221.

12243223021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12243223021 - 2¹³ = 12243214829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12243222983 and 12243223001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12243223001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156055 + ... + 220996.

It is an arithmetic number, because the mean of its divisors is an integer number (1611897300).

Almost surely, 2^12243223021 is an apocalyptic number.

It is an amenable number.

12243223021 is a deficient number, since it is larger than the sum of its proper divisors (651955379).

12243223021 is a wasteful number, since it uses less digits than its factorization.

12243223021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378779.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 12243223021 its reverse (12032234221), we get a palindrome (24275457242).

The spelling of 12243223021 in words is "twelve billion, two hundred forty-three million, two hundred twenty-three thousand, twenty-one".