12112131131211 has 16 divisors (see below), whose sum is σ = 16163783959968. Its totient is φ = 8067618816000.

The previous prime is 12112131131203. The next prime is 12112131131251. The reversal of 12112131131211 is 11213113121121.

It is not a de Polignac number, because 12112131131211 - 2³ = 12112131131203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12112131131251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18315555 + ... + 18965331.

It is an arithmetic number, because the mean of its divisors is an integer number (1010236497498).

Almost surely, 2^{12112131131211} is an apocalyptic number.

12112131131211 is a deficient number, since it is larger than the sum of its proper divisors (4051652828757).

12112131131211 is a wasteful number, since it uses less digits than its factorization.

12112131131211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655262.

The product of its digits is 72, while the sum is 21.

Adding to 12112131131211 its reverse (11213113121121), we get a palindrome (23325244252332).

The spelling of 12112131131211 in words is "twelve trillion, one hundred twelve billion, one hundred thirty-one million, one hundred thirty-one thousand, two hundred eleven".