12231223200 has 648 divisors, whose sum is σ = 51583034412. Its totient is φ = 2717245440.

The previous prime is 12231223183. The next prime is 12231223211. The reversal of 12231223200 is 232213221.

12231223200 is a `hidden beast` number, since 1 + 223 + 122 + 320 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 3832600464 + 8398622736 = 61908^2 + 91644^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 13053132 + ... + 13054068.

Almost surely, 2^12231223200 is an apocalyptic number.

12231223200 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 12231223200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25791517206).

12231223200 is an abundant number, since it is smaller than the sum of its proper divisors (39351811212).

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

12231223200 is a wasteful number, since it uses less digits than its factorization.

12231223200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014 (or 991 counting only the distinct ones).

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

Adding to 12231223200 its reverse (232213221), we get a palindrome (12463436421).

The spelling of 12231223200 in words is "twelve billion, two hundred thirty-one million, two hundred twenty-three thousand, two hundred".