22421211400 has 192 divisors, whose sum is σ = 60456844800. Its totient is φ = 7574568960.

The previous prime is 22421211389. The next prime is 22421211401. The reversal of 22421211400 is 411212422.

It is not an unprimeable number, because it can be changed into a prime (22421211401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37809504 + ... + 37810096.

It is an arithmetic number, because the mean of its divisors is an integer number (314879400).

Almost surely, 2^22421211400 is an apocalyptic number.

22421211400 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 22421211400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30228422400).

22421211400 is an abundant number, since it is smaller than the sum of its proper divisors (38035633400).

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

22421211400 is a wasteful number, since it uses less digits than its factorization.

22421211400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968 (or 959 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22421211400 its reverse (411212422), we get a palindrome (22832423822).

The spelling of 22421211400 in words is "twenty-two billion, four hundred twenty-one million, two hundred eleven thousand, four hundred".