23221231400 has 96 divisors (see below), whose sum is σ = 54324648000. Its totient is φ = 9231045120.

The previous prime is 23221231367. The next prime is 23221231403. The reversal of 23221231400 is 413212232.

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

It is not an unprimeable number, because it can be changed into a prime (23221231403) 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, 40810316 + ... + 40810884.

It is an arithmetic number, because the mean of its divisors is an integer number (565881750).

Almost surely, 2^23221231400 is an apocalyptic number.

23221231400 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 23221231400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27162324000).

23221231400 is an abundant number, since it is smaller than the sum of its proper divisors (31103416600).

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

23221231400 is a wasteful number, since it uses less digits than its factorization.

23221231400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491 (or 1482 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 23221231400 its reverse (413212232), we get a palindrome (23634443632).

The spelling of 23221231400 in words is "twenty-three billion, two hundred twenty-one million, two hundred thirty-one thousand, four hundred".