12105500071 has 16 divisors (see below), whose sum is σ = 14082024960. Its totient is φ = 10191857760.

The previous prime is 12105500027. The next prime is 12105500089. The reversal of 12105500071 is 17000550121.

12105500071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12105500071 - 2⁹ = 12105499559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12105500021) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 88420 + ... + 178966.

It is an arithmetic number, because the mean of its divisors is an integer number (880126560).

Almost surely, 2^12105500071 is an apocalyptic number.

12105500071 is a deficient number, since it is larger than the sum of its proper divisors (1976524889).

12105500071 is an equidigital number, since it uses as much as digits as its factorization.

12105500071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90894.

The product of its (nonzero) digits is 350, while the sum is 22.

The spelling of 12105500071 in words is "twelve billion, one hundred five million, five hundred thousand, seventy-one".