12001332105 has 36 divisors (see below), whose sum is σ = 24198608772. Its totient is φ = 5486322240.

The previous prime is 12001332071. The next prime is 12001332113. The reversal of 12001332105 is 50123310021.

It can be written as a sum of positive squares in 2 ways, for example, as 6975089289 + 5026242816 = 83517^2 + 70896^2 .

It is not a de Polignac number, because 12001332105 - 2⁶ = 12001332041 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2719186 + ... + 2723595.

It is an arithmetic number, because the mean of its divisors is an integer number (672183577).

Almost surely, 2^12001332105 is an apocalyptic number.

12001332105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12001332105 is an abundant number, since it is smaller than the sum of its proper divisors (12197276667).

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

12001332105 is a wasteful number, since it uses less digits than its factorization.

12001332105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5442806 (or 5442796 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

Adding to 12001332105 its reverse (50123310021), we get a palindrome (62124642126).

The spelling of 12001332105 in words is "twelve billion, one million, three hundred thirty-two thousand, one hundred five".