23221211200 has 168 divisors, whose sum is σ = 66000623904. Its totient is φ = 7947264000.

The previous prime is 23221211191. The next prime is 23221211203. The reversal of 23221211200 is 211212232.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (23221211203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 260395 + ... + 338005.

Almost surely, 2^23221211200 is an apocalyptic number.

23221211200 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 23221211200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33000311952).

23221211200 is an abundant number, since it is smaller than the sum of its proper divisors (42779412704).

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

23221211200 is a wasteful number, since it uses less digits than its factorization.

23221211200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77661 (or 77646 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 23221211200 its reverse (211212232), we get a palindrome (23432423432).

The spelling of 23221211200 in words is "twenty-three billion, two hundred twenty-one million, two hundred eleven thousand, two hundred".