12105189971 has 8 divisors (see below), whose sum is σ = 13926123264. Its totient is φ = 10307161800.

The previous prime is 12105189953. The next prime is 12105189973. The reversal of 12105189971 is 17998150121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12105189971 - 2¹⁰ = 12105188947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12105189973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5725145 + ... + 5727258.

It is an arithmetic number, because the mean of its divisors is an integer number (1740765408).

Almost surely, 2^12105189971 is an apocalyptic number.

12105189971 is a deficient number, since it is larger than the sum of its proper divisors (1820933293).

12105189971 is a wasteful number, since it uses less digits than its factorization.

12105189971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11452561.

The product of its (nonzero) digits is 45360, while the sum is 44.

The spelling of 12105189971 in words is "twelve billion, one hundred five million, one hundred eighty-nine thousand, nine hundred seventy-one".