12128227008 has 56 divisors (see below), whose sum is σ = 32528883888. Its totient is φ = 3987357696.

The previous prime is 12128226997. The next prime is 12128227009. The reversal of 12128227008 is 80072282121.

It is a self number, because there is not a number n which added to its sum of digits gives 12128227008.

It is not an unprimeable number, because it can be changed into a prime (12128227009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418641 + ... + 446672.

Almost surely, 2^12128227008 is an apocalyptic number.

It is an amenable number.

12128227008 is an abundant number, since it is smaller than the sum of its proper divisors (20400656880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12128227008 is an equidigital number, since it uses as much as digits as its factorization.

12128227008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865401 (or 865391 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 33.

The spelling of 12128227008 in words is "twelve billion, one hundred twenty-eight million, two hundred twenty-seven thousand, eight".