12123200320 has 112 divisors (see below), whose sum is σ = 35991808128. Its totient is φ = 3778652160.

The previous prime is 12123200303. The next prime is 12123200357. The reversal of 12123200320 is 2300232121.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 12123200294 and 12123200303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221367 + ... + 270646.

Almost surely, 2^12123200320 is an apocalyptic number.

12123200320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12123200320 is an abundant number, since it is smaller than the sum of its proper divisors (23868607808).

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

12123200320 is a wasteful number, since it uses less digits than its factorization.

12123200320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492048 (or 492038 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12123200320 its reverse (2300232121), we get a palindrome (14423432441).

The spelling of 12123200320 in words is "twelve billion, one hundred twenty-three million, two hundred thousand, three hundred twenty".