12228603272 has 12 divisors (see below), whose sum is σ = 22929217605. Its totient is φ = 6114145248.

The previous prime is 12228603271. The next prime is 12228603307. The reversal of 12228603272 is 27230682221.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 12125092996 + 103510276 = 110114^2 + 10174^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=78194.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12228603271) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 293228 + ... + 332324.

Almost surely, 2^12228603272 is an apocalyptic number.

It is an amenable number.

12228603272 is a deficient number, since it is larger than the sum of its proper divisors (10700614333).

12228603272 is an frugal number, since it uses more digits than its factorization.

12228603272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78200 (or 39099 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 12228603272 in words is "twelve billion, two hundred twenty-eight million, six hundred three thousand, two hundred seventy-two".