12051218 has 8 divisors (see below), whose sum is σ = 18862848. Its totient is φ = 5763604.

The previous prime is 12051209. The next prime is 12051227. The reversal of 12051218 is 81215021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12051209) and next prime (12051227).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12051218.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130946 + ... + 131037.

It is an arithmetic number, because the mean of its divisors is an integer number (2357856).

Almost surely, 2^12051218 is an apocalyptic number.

12051218 is a deficient number, since it is larger than the sum of its proper divisors (6811630).

12051218 is a wasteful number, since it uses less digits than its factorization.

12051218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262008.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 12051218 is about 3471.4864251499. The cubic root of 12051218 is about 229.2681082725.

Adding to 12051218 its reverse (81215021), we get a palindrome (93266239).

The spelling of 12051218 in words is "twelve million, fifty-one thousand, two hundred eighteen".