12012015018018 has 64 divisors (see below), whose sum is σ = 24205720924800. Its totient is φ = 3973853744640.

The previous prime is 12012015018001. The next prime is 12012015018043. The reversal of 12012015018018 is 81081051021021.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 903763953 + ... + 903777243.

It is an arithmetic number, because the mean of its divisors is an integer number (378214389450).

Almost surely, 2^{12012015018018} is an apocalyptic number.

12012015018018 is an abundant number, since it is smaller than the sum of its proper divisors (12193705906782).

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

12012015018018 is a wasteful number, since it uses less digits than its factorization.

12012015018018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15667.

The product of its (nonzero) digits is 1280, while the sum is 30.

Adding to 12012015018018 its reverse (81081051021021), we get a palindrome (93093066039039).

The spelling of 12012015018018 in words is "twelve trillion, twelve billion, fifteen million, eighteen thousand, eighteen".