12012018 has 16 divisors (see below), whose sum is σ = 24245760. Its totient is φ = 3967056.

The previous prime is 12012017. The next prime is 12012037. The reversal of 12012018 is 81021021.

It is a junction number, because it is equal to n+sod(n) for n = 12011988 and 12012006.

It is not an unprimeable number, because it can be changed into a prime (12012017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8530 + ... + 9837.

It is an arithmetic number, because the mean of its divisors is an integer number (1515360).

Almost surely, 2^12012018 is an apocalyptic number.

12012018 is an abundant number, since it is smaller than the sum of its proper divisors (12233742).

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

12012018 is a wasteful number, since it uses less digits than its factorization.

12012018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18481.

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

The square root of 12012018 is about 3465.8358299262. The cubic root of 12012018 is about 229.0192517646.

Adding to 12012018 its reverse (81021021), we get a palindrome (93033039).

It can be divided in two parts, 120120 and 18, that multiplied together give a triangular number (2162160 = T₂₀₇₉).

The spelling of 12012018 in words is "twelve million, twelve thousand, eighteen".