12218079 has 8 divisors (see below), whose sum is σ = 16376832. Its totient is φ = 8102360.

The previous prime is 12218051. The next prime is 12218081. The reversal of 12218079 is 97081221.

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 12218079 - 2⁹ = 12217567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12218099) 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, 10089 + ... + 11234.

It is an arithmetic number, because the mean of its divisors is an integer number (2047104).

Almost surely, 2^12218079 is an apocalyptic number.

12218079 is a deficient number, since it is larger than the sum of its proper divisors (4158753).

12218079 is a wasteful number, since it uses less digits than its factorization.

12218079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21517.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 12218079 is about 3495.4368825656. The cubic root of 12218079 is about 230.3214094959.

The spelling of 12218079 in words is "twelve million, two hundred eighteen thousand, seventy-nine".