23221404200 has 48 divisors (see below), whose sum is σ = 54043533180. Its totient is φ = 9279311360.

The previous prime is 23221404191. The next prime is 23221404221. The reversal of 23221404200 is 240412232.

It can be written as a sum of positive squares in 6 ways, for example, as 1009078756 + 22212325444 = 31766^2 + 149038^2 .

It is a super-2 number, since 2×23221404200² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145292 + ... + 259908.

Almost surely, 2^23221404200 is an apocalyptic number.

23221404200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23221404200 is an abundant number, since it is smaller than the sum of its proper divisors (30822128980).

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

23221404200 is a wasteful number, since it uses less digits than its factorization.

23221404200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115646 (or 115637 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 23221404200 its reverse (240412232), we get a palindrome (23461816432).

The spelling of 23221404200 in words is "twenty-three billion, two hundred twenty-one million, four hundred four thousand, two hundred".