12018012 has 12 divisors (see below), whose sum is σ = 28042056. Its totient is φ = 4006000.

The previous prime is 12018011. The next prime is 12018023. The reversal of 12018012 is 21081021.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×12018012³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (15) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12017982 and 12018000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12018011) 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 3 ways as a sum of consecutive naturals, for example, 500739 + ... + 500762.

It is an arithmetic number, because the mean of its divisors is an integer number (2336838).

Almost surely, 2^12018012 is an apocalyptic number.

12018012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12018012 is an abundant number, since it is smaller than the sum of its proper divisors (16024044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12018012 is a wasteful number, since it uses less digits than its factorization.

12018012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001508 (or 1001506 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 12018012 is about 3466.7004485534. The cubic root of 12018012 is about 229.0573389849.

Adding to 12018012 its reverse (21081021), we get a palindrome (33099033).

The spelling of 12018012 in words is "twelve million, eighteen thousand, twelve".