22221344004 has 12 divisors (see below), whose sum is σ = 51849802704. Its totient is φ = 7407114664.

The previous prime is 22221344003. The next prime is 22221344059. The reversal of 22221344004 is 40044312222.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (22221344003) 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 3 ways as a sum of consecutive naturals, for example, 925889322 + ... + 925889345.

It is an arithmetic number, because the mean of its divisors is an integer number (4320816892).

Almost surely, 2^22221344004 is an apocalyptic number.

It is an amenable number.

22221344004 is an abundant number, since it is smaller than the sum of its proper divisors (29628458700).

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

22221344004 is a wasteful number, since it uses less digits than its factorization.

22221344004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851778674 (or 1851778672 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 22221344004 its reverse (40044312222), we get a palindrome (62265656226).

The spelling of 22221344004 in words is "twenty-two billion, two hundred twenty-one million, three hundred forty-four thousand, four".