12112122109 has 8 divisors (see below), whose sum is σ = 12754016640. Its totient is φ = 11470669056.

The previous prime is 12112122103. The next prime is 12112122131. The reversal of 12112122109 is 90122121121.

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

It is not a de Polignac number, because 12112122109 - 2²³ = 12103733501 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12112122109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112122103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53284 + ... + 164509.

It is an arithmetic number, because the mean of its divisors is an integer number (1594252080).

Almost surely, 2^12112122109 is an apocalyptic number.

12112122109 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12112122109 is a deficient number, since it is larger than the sum of its proper divisors (641894531).

12112122109 is a wasteful number, since it uses less digits than its factorization.

12112122109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220739.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 12112122109 in words is "twelve billion, one hundred twelve million, one hundred twenty-two thousand, one hundred nine".