12321279 has 12 divisors (see below), whose sum is σ = 18232032. Its totient is φ = 8013600.

The previous prime is 12321247. The next prime is 12321289. The reversal of 12321279 is 97212321.

It is not a de Polignac number, because 12321279 - 2⁵ = 12321247 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321289) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16327 + ... + 17064.

It is an arithmetic number, because the mean of its divisors is an integer number (1519336).

Almost surely, 2^12321279 is an apocalyptic number.

12321279 is a deficient number, since it is larger than the sum of its proper divisors (5910753).

12321279 is a wasteful number, since it uses less digits than its factorization.

12321279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33438 (or 33435 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 12321279 is about 3510.1679447001. The cubic root of 12321279 is about 230.9680621500.

The spelling of 12321279 in words is "twelve million, three hundred twenty-one thousand, two hundred seventy-nine".