12130777 has 4 divisors (see below), whose sum is σ = 12139956. Its totient is φ = 12121600.

The previous prime is 12130771. The next prime is 12130849. The reversal of 12130777 is 77703121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6255001 + 5875776 = 2501^2 + 2424^2 .

It is a cyclic number.

It is not a de Polignac number, because 12130777 - 2⁷ = 12130649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12130771) 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, 2188 + ... + 5389.

It is an arithmetic number, because the mean of its divisors is an integer number (3034989).

Almost surely, 2^12130777 is an apocalyptic number.

It is an amenable number.

12130777 is a deficient number, since it is larger than the sum of its proper divisors (9179).

12130777 is an equidigital number, since it uses as much as digits as its factorization.

12130777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9178.

The product of its (nonzero) digits is 2058, while the sum is 28.

The square root of 12130777 is about 3482.9264993680. The cubic root of 12130777 is about 229.7715248476.

Adding to 12130777 its reverse (77703121), we get a palindrome (89833898).

The spelling of 12130777 in words is "twelve million, one hundred thirty thousand, seven hundred seventy-seven".