12180111009 has 32 divisors (see below), whose sum is σ = 17893440000. Its totient is φ = 7308322560.

The previous prime is 12180111007. The next prime is 12180111061. The reversal of 12180111009 is 90011108121.

It is not a de Polignac number, because 12180111009 - 2¹ = 12180111007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12180111009.

It is not an unprimeable number, because it can be changed into a prime (12180111007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5588682 + ... + 5590860.

It is an arithmetic number, because the mean of its divisors is an integer number (559170000).

Almost surely, 2^12180111009 is an apocalyptic number.

It is an amenable number.

12180111009 is a deficient number, since it is larger than the sum of its proper divisors (5713328991).

12180111009 is a wasteful number, since it uses less digits than its factorization.

12180111009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3805.

The product of its (nonzero) digits is 144, while the sum is 24.

The spelling of 12180111009 in words is "twelve billion, one hundred eighty million, one hundred eleven thousand, nine".