12112122112 has 18 divisors (see below), whose sum is σ = 24176931758. Its totient is φ = 6056060928.

The previous prime is 12112122103. The next prime is 12112122131. The reversal of 12112122112 is 21122121121.

It can be written as a sum of positive squares in only one way, i.e., 8146145536 + 3965976576 = 90256^2 + 62976^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23656233 + ... + 23656744.

Almost surely, 2^12112122112 is an apocalyptic number.

It is an amenable number.

12112122112 is a deficient number, since it is larger than the sum of its proper divisors (12064809646).

12112122112 is an frugal number, since it uses more digits than its factorization.

12112122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47312993 (or 47312979 counting only the distinct ones).

The product of its digits is 32, while the sum is 16.

Adding to 12112122112 its reverse (21122121121), we get a palindrome (33234243233).

Subtracting 12112122112 from its reverse (21122121121), we obtain a palindrome (9009999009).

The spelling of 12112122112 in words is "twelve billion, one hundred twelve million, one hundred twenty-two thousand, one hundred twelve".