12112111201243 has 2 divisors, whose sum is σ = 12112111201244. Its totient is φ = 12112111201242.

The previous prime is 12112111201217. The next prime is 12112111201249. The reversal of 12112111201243 is 34210211121121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12112111201243 - 2⁹ = 12112111200731 is a prime.

It is a super-2 number, since 2×12112111201243² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12112111201249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056055600621 + 6056055600622.

It is an arithmetic number, because the mean of its divisors is an integer number (6056055600622).

Almost surely, 2^{12112111201243} is an apocalyptic number.

12112111201243 is a deficient number, since it is larger than the sum of its proper divisors (1).

12112111201243 is an equidigital number, since it uses as much as digits as its factorization.

12112111201243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 22.

Adding to 12112111201243 its reverse (34210211121121), we get a palindrome (46322322322364).

The spelling of 12112111201243 in words is "twelve trillion, one hundred twelve billion, one hundred eleven million, two hundred one thousand, two hundred forty-three".