12342313221 has 32 divisors (see below), whose sum is σ = 19507008768. Its totient is φ = 6794150400.

The previous prime is 12342313213. The next prime is 12342313237. The reversal of 12342313221 is 12231324321.

It is not a de Polignac number, because 12342313221 - 2³ = 12342313213 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12342313191 and 12342313200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12342313201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160 + ... + 157113.

It is an arithmetic number, because the mean of its divisors is an integer number (609594024).

Almost surely, 2^12342313221 is an apocalyptic number.

It is an amenable number.

12342313221 is a deficient number, since it is larger than the sum of its proper divisors (7164695547).

12342313221 is a wasteful number, since it uses less digits than its factorization.

12342313221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157421.

The product of its digits is 1728, while the sum is 24.

Adding to 12342313221 its reverse (12231324321), we get a palindrome (24573637542).

The spelling of 12342313221 in words is "twelve billion, three hundred forty-two million, three hundred thirteen thousand, two hundred twenty-one".