2221424023456 has 96 divisors (see below), whose sum is σ = 4782972934656. Its totient is φ = 1007209440000.

The previous prime is 2221424023391. The next prime is 2221424023457. The reversal of 2221424023456 is 6543204241222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2221424023457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 499082031 + ... + 499086481.

It is an arithmetic number, because the mean of its divisors is an integer number (49822634736).

Almost surely, 2^{2221424023456} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221424023456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2391486467328).

2221424023456 is an abundant number, since it is smaller than the sum of its proper divisors (2561548911200).

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

2221424023456 is a wasteful number, since it uses less digits than its factorization.

2221424023456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7706 (or 7698 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 37.

Adding to 2221424023456 its reverse (6543204241222), we get a palindrome (8764628264678).

The spelling of 2221424023456 in words is "two trillion, two hundred twenty-one billion, four hundred twenty-four million, twenty-three thousand, four hundred fifty-six".