12122323200 has 324 divisors, whose sum is σ = 46676773780. Its totient is φ = 2983772160.

The previous prime is 12122323189. The next prime is 12122323201. The reversal of 12122323200 is 232322121.

12122323200 is a `hidden beast` number, since 121 + 22 + 323 + 200 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 1412557056 + 10709766144 = 37584^2 + 103488^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122323201) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 740706 + ... + 756894.

Almost surely, 2^12122323200 is an apocalyptic number.

12122323200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12122323200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23338386890).

12122323200 is an abundant number, since it is smaller than the sum of its proper divisors (34554450580).

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

12122323200 is a wasteful number, since it uses less digits than its factorization.

12122323200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16234 (or 16212 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12122323200 its reverse (232322121), we get a palindrome (12354645321).

The spelling of 12122323200 in words is "twelve billion, one hundred twenty-two million, three hundred twenty-three thousand, two hundred".