22123224400 has 120 divisors (see below), whose sum is σ = 55158755328. Its totient is φ = 8518080000.

The previous prime is 22123224391. The next prime is 22123224407. The reversal of 22123224400 is 442232122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22123224407) 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, 2363730 + ... + 2373070.

Almost surely, 2^22123224400 is an apocalyptic number.

22123224400 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 22123224400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27579377664).

22123224400 is an abundant number, since it is smaller than the sum of its proper divisors (33035530928).

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

22123224400 is a wasteful number, since it uses less digits than its factorization.

22123224400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9581 (or 9570 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 22123224400 its reverse (442232122), we get a palindrome (22565456522).

The spelling of 22123224400 in words is "twenty-two billion, one hundred twenty-three million, two hundred twenty-four thousand, four hundred".