12018812 has 12 divisors (see below), whose sum is σ = 22650936. Its totient is φ = 5547120.

The previous prime is 12018749. The next prime is 12018817. The reversal of 12018812 is 21881021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12018817) 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, 115514 + ... + 115617.

It is an arithmetic number, because the mean of its divisors is an integer number (1887578).

Almost surely, 2^12018812 is an apocalyptic number.

It is an amenable number.

12018812 is a deficient number, since it is larger than the sum of its proper divisors (10632124).

12018812 is a wasteful number, since it uses less digits than its factorization.

12018812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231148 (or 231146 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 23.

The square root of 12018812 is about 3466.8158301242. The cubic root of 12018812 is about 229.0624214063.

Adding to 12018812 its reverse (21881021), we get a palindrome (33899833).

The spelling of 12018812 in words is "twelve million, eighteen thousand, eight hundred twelve".