23121472200 has 384 divisors, whose sum is σ = 80429137920. Its totient is φ = 5464166400.

The previous prime is 23121472193. The next prime is 23121472201. The reversal of 23121472200 is 227412132.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (23121472201) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15717465 + ... + 15718935.

It is an arithmetic number, because the mean of its divisors is an integer number (209450880).

Almost surely, 2^23121472200 is an apocalyptic number.

23121472200 is a gapful number since it is divisible by the number (20) 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 23121472200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40214568960).

23121472200 is an abundant number, since it is smaller than the sum of its proper divisors (57307665720).

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

23121472200 is a wasteful number, since it uses less digits than its factorization.

23121472200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597 (or 1588 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

Adding to 23121472200 its reverse (227412132), we get a palindrome (23348884332).

The spelling of 23121472200 in words is "twenty-three billion, one hundred twenty-one million, four hundred seventy-two thousand, two hundred".