12112011031 has 2 divisors, whose sum is σ = 12112011032. Its totient is φ = 12112011030.

The previous prime is 12112011011. The next prime is 12112011047. The reversal of 12112011031 is 13011021121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12112011031 is a prime.

It is a super-2 number, since 2×12112011031² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12112011011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056005515 + 6056005516.

It is an arithmetic number, because the mean of its divisors is an integer number (6056005516).

Almost surely, 2^12112011031 is an apocalyptic number.

12112011031 is a deficient number, since it is larger than the sum of its proper divisors (1).

12112011031 is an equidigital number, since it uses as much as digits as its factorization.

12112011031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 12112011031 its reverse (13011021121), we get a palindrome (25123032152).

The spelling of 12112011031 in words is "twelve billion, one hundred twelve million, eleven thousand, thirty-one".