12881105 has 4 divisors (see below), whose sum is σ = 15457332. Its totient is φ = 10304880.

The previous prime is 12881051. The next prime is 12881117. The reversal of 12881105 is 50118821.

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 10214416 + 2666689 = 3196^2 + 1633^2 .

It is not a de Polignac number, because 12881105 - 2⁶ = 12881041 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1288106 + ... + 1288115.

It is an arithmetic number, because the mean of its divisors is an integer number (3864333).

Almost surely, 2^12881105 is an apocalyptic number.

It is an amenable number.

12881105 is a deficient number, since it is larger than the sum of its proper divisors (2576227).

12881105 is an equidigital number, since it uses as much as digits as its factorization.

12881105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2576226.

The product of its (nonzero) digits is 640, while the sum is 26.

The square root of 12881105 is about 3589.0256337898. The cubic root of 12881105 is about 234.4144468123.

Adding to 12881105 its reverse (50118821), we get a palindrome (62999926).

The spelling of 12881105 in words is "twelve million, eight hundred eighty-one thousand, one hundred five".