12112320173 has 2 divisors, whose sum is σ = 12112320174. Its totient is φ = 12112320172.

The previous prime is 12112320139. The next prime is 12112320239. The reversal of 12112320173 is 37102321121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11385316804 + 727003369 = 106702^2 + 26963^2 .

It is a cyclic number.

It is not a de Polignac number, because 12112320173 - 2²⁶ = 12045211309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12112323173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056160086 + 6056160087.

It is an arithmetic number, because the mean of its divisors is an integer number (6056160087).

Almost surely, 2^12112320173 is an apocalyptic number.

It is an amenable number.

12112320173 is a deficient number, since it is larger than the sum of its proper divisors (1).

12112320173 is an equidigital number, since it uses as much as digits as its factorization.

12112320173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

Adding to 12112320173 its reverse (37102321121), we get a palindrome (49214641294).

The spelling of 12112320173 in words is "twelve billion, one hundred twelve million, three hundred twenty thousand, one hundred seventy-three".