12911105 has 8 divisors (see below), whose sum is σ = 15871464. Its totient is φ = 10076800.

The previous prime is 12911099. The next prime is 12911117. The reversal of 12911105 is 50111921.

It can be written as a sum of positive squares in 4 ways, for example, as 287296 + 12623809 = 536^2 + 3553^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-12911105 is a prime.

It is a Duffinian number.

It is a Curzon 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, 31286 + ... + 31695.

It is an arithmetic number, because the mean of its divisors is an integer number (1983933).

Almost surely, 2^12911105 is an apocalyptic number.

It is an amenable number.

12911105 is a deficient number, since it is larger than the sum of its proper divisors (2960359).

12911105 is an equidigital number, since it uses as much as digits as its factorization.

12911105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63027.

The product of its (nonzero) digits is 90, while the sum is 20.

The square root of 12911105 is about 3593.2026104855. The cubic root of 12911105 is about 234.5962888971.

The spelling of 12911105 in words is "twelve million, nine hundred eleven thousand, one hundred five".