12712277 has 4 divisors (see below), whose sum is σ = 13460076. Its totient is φ = 11964480.

The previous prime is 12712241. The next prime is 12712283. The reversal of 12712277 is 77221721.

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 10504081 + 2208196 = 3241^2 + 1486^2 .

It is a cyclic number.

It is not a de Polignac number, because 12712277 - 2¹⁸ = 12450133 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 (12711277) by changing a digit.

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, 373874 + ... + 373907.

It is an arithmetic number, because the mean of its divisors is an integer number (3365019).

Almost surely, 2^12712277 is an apocalyptic number.

12712277 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12712277 is a deficient number, since it is larger than the sum of its proper divisors (747799).

12712277 is an equidigital number, since it uses as much as digits as its factorization.

12712277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747798.

The product of its digits is 2744, while the sum is 29.

The square root of 12712277 is about 3565.4280247959. The cubic root of 12712277 is about 233.3858110991.

Adding to 12712277 its reverse (77221721), we get a palindrome (89933998).

The spelling of 12712277 in words is "twelve million, seven hundred twelve thousand, two hundred seventy-seven".