12112321122 has 64 divisors (see below), whose sum is σ = 29379525120. Its totient is φ = 3668360400.

The previous prime is 12112321103. The next prime is 12112321127. The reversal of 12112321122 is 22112321121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 12112321095 and 12112321104.

It is not an unprimeable number, because it can be changed into a prime (12112321127) 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, 1327797 + ... + 1336887.

It is an arithmetic number, because the mean of its divisors is an integer number (459055080).

Almost surely, 2^12112321122 is an apocalyptic number.

12112321122 is an abundant number, since it is smaller than the sum of its proper divisors (17267203998).

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

12112321122 is a wasteful number, since it uses less digits than its factorization.

12112321122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11356 (or 11350 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

Adding to 12112321122 its reverse (22112321121), we get a palindrome (34224642243).

Subtracting 12112321122 from its reverse (22112321121), we obtain a palindrome (9999999999).

The spelling of 12112321122 in words is "twelve billion, one hundred twelve million, three hundred twenty-one thousand, one hundred twenty-two".