22221021454424 has 64 divisors (see below), whose sum is σ = 45007344392640. Its totient is φ = 10224367534080.

The previous prime is 22221021454369. The next prime is 22221021454469. The reversal of 22221021454424 is 42445412012222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43913384 + ... + 44416520.

It is an arithmetic number, because the mean of its divisors is an integer number (703239756135).

Almost surely, 2^{22221021454424} is an apocalyptic number.

It is an amenable number.

22221021454424 is an abundant number, since it is smaller than the sum of its proper divisors (22786322938216).

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

22221021454424 is a wasteful number, since it uses less digits than its factorization.

22221021454424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504460 (or 504456 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 35.

Adding to 22221021454424 its reverse (42445412012222), we get a palindrome (64666433466646).

The spelling of 22221021454424 in words is "twenty-two trillion, two hundred twenty-one billion, twenty-one million, four hundred fifty-four thousand, four hundred twenty-four".