12112303121 has 8 divisors (see below), whose sum is σ = 12133464264. Its totient is φ = 12091161600.

The previous prime is 12112303031. The next prime is 12112303127. The reversal of 12112303121 is 12130321121.

It can be written as a sum of positive squares in 4 ways, for example, as 3023350225 + 9088952896 = 54985^2 + 95336^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12112303121 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 12112303121.

It is not an unprimeable number, because it can be changed into a prime (12112303127) 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, 1712825 + ... + 1719881.

It is an arithmetic number, because the mean of its divisors is an integer number (1516683033).

Almost surely, 2^12112303121 is an apocalyptic number.

It is an amenable number.

12112303121 is a deficient number, since it is larger than the sum of its proper divisors (21161143).

12112303121 is an equidigital number, since it uses as much as digits as its factorization.

12112303121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9811.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12112303121 its reverse (12130321121), we get a palindrome (24242624242).

The spelling of 12112303121 in words is "twelve billion, one hundred twelve million, three hundred three thousand, one hundred twenty-one".