12005311134 has 16 divisors (see below), whose sum is σ = 24838575120. Its totient is φ = 3863778240.

The previous prime is 12005311117. The next prime is 12005311259. The reversal of 12005311134 is 43111350021.

It is a self number, because there is not a number n which added to its sum of digits gives 12005311134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34497847 + ... + 34498194.

It is an arithmetic number, because the mean of its divisors is an integer number (1552410945).

Almost surely, 2^12005311134 is an apocalyptic number.

12005311134 is an abundant number, since it is smaller than the sum of its proper divisors (12833263986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12005311134 is a wasteful number, since it uses less digits than its factorization.

12005311134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68996075.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 12005311134 its reverse (43111350021), we get a palindrome (55116661155).

The spelling of 12005311134 in words is "twelve billion, five million, three hundred eleven thousand, one hundred thirty-four".