12343011423221 has 4 divisors (see below), whose sum is σ = 12545355872844. Its totient is φ = 12140666973600.

The previous prime is 12343011423163. The next prime is 12343011423227. The reversal of 12343011423221 is 12232411034321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 725043735025 + 11617967688196 = 851495^2 + 3408514^2 .

It is a cyclic number.

It is not a de Polignac number, because 12343011423221 - 2³⁴ = 12325831554037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12343011423227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101172224720 + ... + 101172224841.

It is an arithmetic number, because the mean of its divisors is an integer number (3136338968211).

Almost surely, 2^{12343011423221} is an apocalyptic number.

It is an amenable number.

12343011423221 is a deficient number, since it is larger than the sum of its proper divisors (202344449623).

12343011423221 is an equidigital number, since it uses as much as digits as its factorization.

12343011423221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202344449622.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 12343011423221 its reverse (12232411034321), we get a palindrome (24575422457542).

The spelling of 12343011423221 in words is "twelve trillion, three hundred forty-three billion, eleven million, four hundred twenty-three thousand, two hundred twenty-one".