12618227 has 4 divisors (see below), whose sum is σ = 12646296. Its totient is φ = 12590160.

The previous prime is 12618211. The next prime is 12618239. The reversal of 12618227 is 72281621.

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 12618227 - 2⁴ = 12618211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12618227.

It is not an unprimeable number, because it can be changed into a prime (12618257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13349 + ... + 14262.

It is an arithmetic number, because the mean of its divisors is an integer number (3161574).

Almost surely, 2^12618227 is an apocalyptic number.

12618227 is a deficient number, since it is larger than the sum of its proper divisors (28069).

12618227 is an equidigital number, since it uses as much as digits as its factorization.

12618227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28068.

The product of its digits is 2688, while the sum is 29.

The square root of 12618227 is about 3552.2143797919. The cubic root of 12618227 is about 232.8088284363.

Adding to 12618227 its reverse (72281621), we get a palindrome (84899848).

The spelling of 12618227 in words is "twelve million, six hundred eighteen thousand, two hundred twenty-seven".