12228123320 has 32 divisors (see below), whose sum is σ = 31443746400. Its totient is φ = 4192499328.

The previous prime is 12228123317. The next prime is 12228123337. The reversal of 12228123320 is 2332182221.

It is a self number, because there is not a number n which added to its sum of digits gives 12228123320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21835655 + ... + 21836214.

It is an arithmetic number, because the mean of its divisors is an integer number (982617075).

Almost surely, 2^12228123320 is an apocalyptic number.

12228123320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12228123320 is an abundant number, since it is smaller than the sum of its proper divisors (19215623080).

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

12228123320 is a wasteful number, since it uses less digits than its factorization.

12228123320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43671887 (or 43671883 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The spelling of 12228123320 in words is "twelve billion, two hundred twenty-eight million, one hundred twenty-three thousand, three hundred twenty".