12218467 has 4 divisors (see below), whose sum is σ = 12299536. Its totient is φ = 12137400.

The previous prime is 12218443. The next prime is 12218489. The reversal of 12218467 is 76481221.

12218467 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12218467 - 2¹¹ = 12216419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12218417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40308 + ... + 40609.

It is an arithmetic number, because the mean of its divisors is an integer number (3074884).

Almost surely, 2^12218467 is an apocalyptic number.

12218467 is a deficient number, since it is larger than the sum of its proper divisors (81069).

12218467 is an equidigital number, since it uses as much as digits as its factorization.

12218467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81068.

The product of its digits is 5376, while the sum is 31.

The square root of 12218467 is about 3495.4923830556. The cubic root of 12218467 is about 230.3238475158.

Adding to 12218467 its reverse (76481221), we get a palindrome (88699688).

The spelling of 12218467 in words is "twelve million, two hundred eighteen thousand, four hundred sixty-seven".