12216167 has 4 divisors (see below), whose sum is σ = 12278376. Its totient is φ = 12153960.

The previous prime is 12216161. The next prime is 12216173. The reversal of 12216167 is 76161221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76161221 = 29 ⋅2626249.

It is an interprime number because it is at equal distance from previous prime (12216161) and next prime (12216173).

It is a cyclic number.

It is not a de Polignac number, because 12216167 - 2⁶ = 12216103 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 (12216161) 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, 30809 + ... + 31202.

It is an arithmetic number, because the mean of its divisors is an integer number (3069594).

Almost surely, 2^12216167 is an apocalyptic number.

12216167 is a deficient number, since it is larger than the sum of its proper divisors (62209).

12216167 is an equidigital number, since it uses as much as digits as its factorization.

12216167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62208.

The product of its digits is 1008, while the sum is 26.

The square root of 12216167 is about 3495.1633724334. The cubic root of 12216167 is about 230.3093945818.

Adding to 12216167 its reverse (76161221), we get a palindrome (88377388).

The spelling of 12216167 in words is "twelve million, two hundred sixteen thousand, one hundred sixty-seven".