12112112122 has 8 divisors (see below), whose sum is σ = 19819819872. Its totient is φ = 5505505500.

The previous prime is 12112112119. The next prime is 12112112123. The reversal of 12112112122 is 22121121121.

It is a sphenic number, since it is the product of 3 distinct primes.

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 = 12112112096 and 12112112105.

It is not an unprimeable number, because it can be changed into a prime (12112112123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275275254 + ... + 275275297.

It is an arithmetic number, because the mean of its divisors is an integer number (2477477484).

Almost surely, 2^12112112122 is an apocalyptic number.

12112112122 is a deficient number, since it is larger than the sum of its proper divisors (7707707750).

12112112122 is a wasteful number, since it uses less digits than its factorization.

12112112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550550564.

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

Adding to 12112112122 its reverse (22121121121), we get a palindrome (34233233243).

It can be divided in two parts, 121121121 and 22, that multiplied together give a palindrome (2664664662).

The spelling of 12112112122 in words is "twelve billion, one hundred twelve million, one hundred twelve thousand, one hundred twenty-two".