12239394221 has 8 divisors (see below), whose sum is σ = 12623572224. Its totient is φ = 11860373200.

The previous prime is 12239394197. The next prime is 12239394229. The reversal of 12239394221 is 12249393221.

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 12239394221 - 2⁶ = 12239394157 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 (12239394229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1284425 + ... + 1293918.

It is an arithmetic number, because the mean of its divisors is an integer number (1577946528).

Almost surely, 2^12239394221 is an apocalyptic number.

It is an amenable number.

12239394221 is a deficient number, since it is larger than the sum of its proper divisors (384178003).

12239394221 is a wasteful number, since it uses less digits than its factorization.

12239394221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2578491.

The product of its digits is 46656, while the sum is 38.

The spelling of 12239394221 in words is "twelve billion, two hundred thirty-nine million, three hundred ninety-four thousand, two hundred twenty-one".