12112222012 has 48 divisors (see below), whose sum is σ = 24059397600. Its totient is φ = 5284885760.

The previous prime is 12112222007. The next prime is 12112222019. The reversal of 12112222012 is 21022221121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112222019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193314 + ... + 248182.

It is an arithmetic number, because the mean of its divisors is an integer number (501237450).

Almost surely, 2^12112222012 is an apocalyptic number.

It is an amenable number.

12112222012 is a deficient number, since it is larger than the sum of its proper divisors (11947175588).

12112222012 is a wasteful number, since it uses less digits than its factorization.

12112222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55086 (or 55084 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12112222012 its reverse (21022221121), we get a palindrome (33134443133).

The spelling of 12112222012 in words is "twelve billion, one hundred twelve million, two hundred twenty-two thousand, twelve".