12772827721 has 4 divisors (see below), whose sum is σ = 12773997072. Its totient is φ = 12771658372.

The previous prime is 12772827701. The next prime is 12772827737.

12772827721 is nontrivially palindromic in base 10.

12772827721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12772827721 - 2⁵ = 12772827689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12772827701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 568135 + ... + 590188.

It is an arithmetic number, because the mean of its divisors is an integer number (3193499268).

Almost surely, 2^12772827721 is an apocalyptic number.

It is an amenable number.

12772827721 is a deficient number, since it is larger than the sum of its proper divisors (1169351).

12772827721 is a wasteful number, since it uses less digits than its factorization.

12772827721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169350.

The product of its digits is 307328, while the sum is 46.

The spelling of 12772827721 in words is "twelve billion, seven hundred seventy-two million, eight hundred twenty-seven thousand, seven hundred twenty-one".