12112205122 has 24 divisors (see below), whose sum is σ = 19009512144. Its totient is φ = 5787630024.

The previous prime is 12112205113. The next prime is 12112205197. The reversal of 12112205122 is 22150221121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12112205122.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1352953 + ... + 1361875.

It is an arithmetic number, because the mean of its divisors is an integer number (792063006).

Almost surely, 2^12112205122 is an apocalyptic number.

12112205122 is a deficient number, since it is larger than the sum of its proper divisors (6897307022).

12112205122 is a wasteful number, since it uses less digits than its factorization.

12112205122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10254 (or 10231 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 12112205122 its reverse (22150221121), we get a palindrome (34262426243).

The spelling of 12112205122 in words is "twelve billion, one hundred twelve million, two hundred five thousand, one hundred twenty-two".