12009809228 has 12 divisors (see below), whose sum is σ = 21330855672. Its totient is φ = 5915279040.

The previous prime is 12009809221. The next prime is 12009809291. The reversal of 12009809228 is 82290890021.

It is not an unprimeable number, because it can be changed into a prime (12009809221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22406093 + ... + 22406628.

It is an arithmetic number, because the mean of its divisors is an integer number (1777571306).

Almost surely, 2^12009809228 is an apocalyptic number.

It is an amenable number.

12009809228 is a deficient number, since it is larger than the sum of its proper divisors (9321046444).

12009809228 is a wasteful number, since it uses less digits than its factorization.

12009809228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44812792 (or 44812790 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 12009809228 in words is "twelve billion, nine million, eight hundred nine thousand, two hundred twenty-eight".