221144332223004 has 12 divisors (see below), whose sum is σ = 516003441853704. Its totient is φ = 73714777407664.

The previous prime is 221144332222999. The next prime is 221144332223051. The reversal of 221144332223004 is 400322233441122.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9214347175947 + ... + 9214347175970.

It is an arithmetic number, because the mean of its divisors is an integer number (43000286821142).

Almost surely, 2^{221144332223004} is an apocalyptic number.

It is an amenable number.

221144332223004 is an abundant number, since it is smaller than the sum of its proper divisors (294859109630700).

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

221144332223004 is a wasteful number, since it uses less digits than its factorization.

221144332223004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18428694351924 (or 18428694351922 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 221144332223004 its reverse (400322233441122), we get a palindrome (621466565664126).

The spelling of 221144332223004 in words is "two hundred twenty-one trillion, one hundred forty-four billion, three hundred thirty-two million, two hundred twenty-three thousand, four".