12228172178 has 8 divisors (see below), whose sum is σ = 18342745968. Its totient is φ = 6113923524.

The previous prime is 12228172153. The next prime is 12228172189. The reversal of 12228172178 is 87127182221.

12228172178 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66425 + ... + 169907.

It is an arithmetic number, because the mean of its divisors is an integer number (2292843246).

Almost surely, 2^12228172178 is an apocalyptic number.

12228172178 is a deficient number, since it is larger than the sum of its proper divisors (6114573790).

12228172178 is a wasteful number, since it uses less digits than its factorization.

12228172178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162568.

The product of its digits is 50176, while the sum is 41.

The spelling of 12228172178 in words is "twelve billion, two hundred twenty-eight million, one hundred seventy-two thousand, one hundred seventy-eight".