12443321 has 8 divisors (see below), whose sum is σ = 13600224. Its totient is φ = 11290720.

The previous prime is 12443317. The next prime is 12443323. The reversal of 12443321 is 12334421.

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 12443321 - 2² = 12443317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12443293 and 12443302.

It is not an unprimeable number, because it can be changed into a prime (12443323) 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, 9890 + ... + 11076.

It is an arithmetic number, because the mean of its divisors is an integer number (1700028).

Almost surely, 2^12443321 is an apocalyptic number.

12443321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12443321 is a deficient number, since it is larger than the sum of its proper divisors (1156903).

12443321 is a wasteful number, since it uses less digits than its factorization.

12443321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151.

The product of its digits is 576, while the sum is 20.

The square root of 12443321 is about 3527.5091778761. The cubic root of 12443321 is about 231.7281360156.

Adding to 12443321 its reverse (12334421), we get a palindrome (24777742).

Subtracting from 12443321 its reverse (12334421), we obtain a square (108900 = 330²).

The spelling of 12443321 in words is "twelve million, four hundred forty-three thousand, three hundred twenty-one".