12112221112011 has 6 divisors (see below), whose sum is σ = 17495430495140. Its totient is φ = 8074814074668.

The previous prime is 12112221112003. The next prime is 12112221112049. The reversal of 12112221112011 is 11021112221121.

It is a happy number.

It is not a de Polignac number, because 12112221112011 - 2³ = 12112221112003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12112221112081) 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 5 ways as a sum of consecutive naturals, for example, 672901172881 + ... + 672901172898.

Almost surely, 2^{12112221112011} is an apocalyptic number.

12112221112011 is a deficient number, since it is larger than the sum of its proper divisors (5383209383129).

12112221112011 is a wasteful number, since it uses less digits than its factorization.

12112221112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345802345785 (or 1345802345782 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 12112221112011 its reverse (11021112221121), we get a palindrome (23133333333132).

The spelling of 12112221112011 in words is "twelve trillion, one hundred twelve billion, two hundred twenty-one million, one hundred twelve thousand, eleven".