12018055 has 8 divisors (see below), whose sum is σ = 16481952. Its totient is φ = 8240928.

The previous prime is 12018053. The next prime is 12018059. The reversal of 12018055 is 55081021.

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 12018055 - 2¹ = 12018053 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 (12018053) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 171652 + ... + 171721.

It is an arithmetic number, because the mean of its divisors is an integer number (2060244).

Almost surely, 2^12018055 is an apocalyptic number.

12018055 is a deficient number, since it is larger than the sum of its proper divisors (4463897).

12018055 is an equidigital number, since it uses as much as digits as its factorization.

12018055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343385.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 12018055 is about 3466.7066504104. The cubic root of 12018055 is about 229.0576121708.

Adding to 12018055 its reverse (55081021), we get a palindrome (67099076).

The spelling of 12018055 in words is "twelve million, eighteen thousand, fifty-five".