12916205 has 4 divisors (see below), whose sum is σ = 15499452. Its totient is φ = 10332960.

The previous prime is 12916187. The next prime is 12916217. The reversal of 12916205 is 50261921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8168164 + 4748041 = 2858^2 + 2179^2 .

It is not a de Polignac number, because 12916205 - 2²⁰ = 11867629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1291616 + ... + 1291625.

It is an arithmetic number, because the mean of its divisors is an integer number (3874863).

Almost surely, 2^12916205 is an apocalyptic number.

It is an amenable number.

12916205 is a deficient number, since it is larger than the sum of its proper divisors (2583247).

12916205 is an equidigital number, since it uses as much as digits as its factorization.

12916205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2583246.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 12916205 is about 3593.9122137303. The cubic root of 12916205 is about 234.6271740298.

The spelling of 12916205 in words is "twelve million, nine hundred sixteen thousand, two hundred five".