23003221200 has 120 divisors (see below), whose sum is σ = 74217645600. Its totient is φ = 6090017280.

The previous prime is 23003221181. The next prime is 23003221217. The reversal of 23003221200 is 212230032.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×23003221200² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 23003221200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97846 + ... + 235754.

It is an arithmetic number, because the mean of its divisors is an integer number (618480380).

Almost surely, 2^23003221200 is an apocalyptic number.

23003221200 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 23003221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37108822800).

23003221200 is an abundant number, since it is smaller than the sum of its proper divisors (51214424400).

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

23003221200 is a wasteful number, since it uses less digits than its factorization.

23003221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138069 (or 138058 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 23003221200 its reverse (212230032), we get a palindrome (23215451232).

The spelling of 23003221200 in words is "twenty-three billion, three million, two hundred twenty-one thousand, two hundred".