12112178118 has 32 divisors (see below), whose sum is σ = 24575000832. Its totient is φ = 3978996000.

The previous prime is 12112178081. The next prime is 12112178161. The reversal of 12112178118 is 81187121121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1804168 + ... + 1810868.

It is an arithmetic number, because the mean of its divisors is an integer number (767968776).

Almost surely, 2^12112178118 is an apocalyptic number.

12112178118 is an abundant number, since it is smaller than the sum of its proper divisors (12462822714).

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

12112178118 is a wasteful number, since it uses less digits than its factorization.

12112178118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11020.

The product of its digits is 1792, while the sum is 33.

Adding to 12112178118 its reverse (81187121121), we get a palindrome (93299299239).

The spelling of 12112178118 in words is "twelve billion, one hundred twelve million, one hundred seventy-eight thousand, one hundred eighteen".