12112011020311 has 4 divisors (see below), whose sum is σ = 12112065195624. Its totient is φ = 12111956845000.

The previous prime is 12112011020297. The next prime is 12112011020357. The reversal of 12112011020311 is 11302011021121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12112011020311 - 2¹⁵ = 12112010987543 is a prime.

It is a super-4 number, since 4×12112011020311⁴ (a number of 53 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112011020111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26750905 + ... + 27199906.

It is an arithmetic number, because the mean of its divisors is an integer number (3028016298906).

Almost surely, 2^{12112011020311} is an apocalyptic number.

12112011020311 is a deficient number, since it is larger than the sum of its proper divisors (54175313).

12112011020311 is an equidigital number, since it uses as much as digits as its factorization.

12112011020311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54175312.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 12112011020311 its reverse (11302011021121), we get a palindrome (23414022041432).

The spelling of 12112011020311 in words is "twelve trillion, one hundred twelve billion, eleven million, twenty thousand, three hundred eleven".