12112217017 has 8 divisors (see below), whose sum is σ = 12133989000. Its totient is φ = 12090463104.

The previous prime is 12112216999. The next prime is 12112217063. The reversal of 12112217017 is 71071221121.

It can be written as a sum of positive squares in 4 ways, for example, as 581967376 + 11530249641 = 24124^2 + 107379^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12112217017 - 2²³ = 12103828409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12112216982 and 12112217000.

It is not an unprimeable number, because it can be changed into a prime (12112217077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2220109 + ... + 2225557.

It is an arithmetic number, because the mean of its divisors is an integer number (1516748625).

Almost surely, 2^12112217017 is an apocalyptic number.

It is an amenable number.

12112217017 is a deficient number, since it is larger than the sum of its proper divisors (21771983).

12112217017 is an equidigital number, since it uses as much as digits as its factorization.

12112217017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9035.

The product of its (nonzero) digits is 392, while the sum is 25.

Adding to 12112217017 its reverse (71071221121), we get a palindrome (83183438138).

The spelling of 12112217017 in words is "twelve billion, one hundred twelve million, two hundred seventeen thousand, seventeen".