12005311135 has 4 divisors (see below), whose sum is σ = 14406373368. Its totient is φ = 9604248904.

The previous prime is 12005311117. The next prime is 12005311259. The reversal of 12005311135 is 53111350021.

12005311135 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53111350021 = 41 ⋅1295398781.

It is a cyclic number.

It is not a de Polignac number, because 12005311135 - 2⁵ = 12005311103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1200531109 + ... + 1200531118.

It is an arithmetic number, because the mean of its divisors is an integer number (3601593342).

Almost surely, 2^12005311135 is an apocalyptic number.

12005311135 is a deficient number, since it is larger than the sum of its proper divisors (2401062233).

12005311135 is an equidigital number, since it uses as much as digits as its factorization.

12005311135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2401062232.

The product of its (nonzero) digits is 450, while the sum is 22.

Adding to 12005311135 its reverse (53111350021), we get a palindrome (65116661156).

The spelling of 12005311135 in words is "twelve billion, five million, three hundred eleven thousand, one hundred thirty-five".