12112211022017 has 2 divisors, whose sum is σ = 12112211022018. Its totient is φ = 12112211022016.

The previous prime is 12112211022007. The next prime is 12112211022139. The reversal of 12112211022017 is 71022011221121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8235344533441 + 3876866488576 = 2869729^2 + 1968976^2 .

It is a cyclic number.

It is not a de Polignac number, because 12112211022017 - 2¹⁰ = 12112211020993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12112211021983 and 12112211022001.

It is not a weakly prime, because it can be changed into another prime (12112211022007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056105511008 + 6056105511009.

It is an arithmetic number, because the mean of its divisors is an integer number (6056105511009).

Almost surely, 2^{12112211022017} is an apocalyptic number.

It is an amenable number.

12112211022017 is a deficient number, since it is larger than the sum of its proper divisors (1).

12112211022017 is an equidigital number, since it uses as much as digits as its factorization.

12112211022017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 23.

Adding to 12112211022017 its reverse (71022011221121), we get a palindrome (83134222243138).

The spelling of 12112211022017 in words is "twelve trillion, one hundred twelve billion, two hundred eleven million, twenty-two thousand, seventeen".