12171063328 has 12 divisors (see below), whose sum is σ = 23961780990. Its totient is φ = 6085531648.

The previous prime is 12171063319. The next prime is 12171063329. The reversal of 12171063328 is 82336017121.

It can be written as a sum of positive squares in only one way, i.e., 9609488784 + 2561574544 = 98028^2 + 50612^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12171063293 and 12171063302.

It is not an unprimeable number, because it can be changed into a prime (12171063329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190172833 + ... + 190172896.

Almost surely, 2^12171063328 is an apocalyptic number.

It is an amenable number.

12171063328 is a deficient number, since it is larger than the sum of its proper divisors (11790717662).

12171063328 is an equidigital number, since it uses as much as digits as its factorization.

12171063328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380345739 (or 380345731 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The spelling of 12171063328 in words is "twelve billion, one hundred seventy-one million, sixty-three thousand, three hundred twenty-eight".