12011131023 has 12 divisors (see below), whose sum is σ = 17012306760. Its totient is φ = 7536395392.

The previous prime is 12011130977. The next prime is 12011131037. The reversal of 12011131023 is 32013111021.

It is a happy number.

It is not a de Polignac number, because 12011131023 - 2⁶ = 12011130959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12011130993 and 12011131011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011133023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6925968 + ... + 6927701.

It is an arithmetic number, because the mean of its divisors is an integer number (1417692230).

Almost surely, 2^12011131023 is an apocalyptic number.

12011131023 is a deficient number, since it is larger than the sum of its proper divisors (5001175737).

12011131023 is a wasteful number, since it uses less digits than its factorization.

12011131023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13853706 (or 13853689 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12011131023 its reverse (32013111021), we get a palindrome (44024242044).

The spelling of 12011131023 in words is "twelve billion, eleven million, one hundred thirty-one thousand, twenty-three".