12001000018 has 16 divisors (see below), whose sum is σ = 20617781184. Its totient is φ = 5132126160.

The previous prime is 12001000003. The next prime is 12001000031. The reversal of 12001000018 is 81000010021.

It is a junction number, because it is equal to n+sod(n) for n = 12000999971 and 12001000007.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 923280 + ... + 936187.

It is an arithmetic number, because the mean of its divisors is an integer number (1288611324).

Almost surely, 2^12001000018 is an apocalyptic number.

12001000018 is a deficient number, since it is larger than the sum of its proper divisors (8616781166).

12001000018 is a wasteful number, since it uses less digits than its factorization.

12001000018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1859937.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12001000018 its reverse (81000010021), we get a palindrome (93001010039).

The spelling of 12001000018 in words is "twelve billion, one million, eighteen", and thus it is an aban number and an uban number.