12228456729 has 16 divisors (see below), whose sum is σ = 16475284800. Its totient is φ = 8067057600.

The previous prime is 12228456661. The next prime is 12228456731. The reversal of 12228456729 is 92765482221.

It is not a de Polignac number, because 12228456729 - 2¹⁹ = 12227932441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12228456739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 580194 + ... + 600900.

It is an arithmetic number, because the mean of its divisors is an integer number (1029705300).

Almost surely, 2^12228456729 is an apocalyptic number.

It is an amenable number.

12228456729 is a deficient number, since it is larger than the sum of its proper divisors (4246828071).

12228456729 is a wasteful number, since it uses less digits than its factorization.

12228456729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22760.

The product of its digits is 967680, while the sum is 48.

The spelling of 12228456729 in words is "twelve billion, two hundred twenty-eight million, four hundred fifty-six thousand, seven hundred twenty-nine".