221443004111 has 32 divisors (see below), whose sum is σ = 264883322880. Its totient is φ = 181120464000.

The previous prime is 221443004099. The next prime is 221443004129. The reversal of 221443004111 is 111400344122.

221443004111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221443004111 - 2³⁰ = 220369262287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221443004161) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 6020306 + ... + 6056976.

It is an arithmetic number, because the mean of its divisors is an integer number (8277603840).

Almost surely, 2^221443004111 is an apocalyptic number.

221443004111 is a deficient number, since it is larger than the sum of its proper divisors (43440318769).

221443004111 is a wasteful number, since it uses less digits than its factorization.

221443004111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37055.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 221443004111 its reverse (111400344122), we get a palindrome (332843348233).

The spelling of 221443004111 in words is "two hundred twenty-one billion, four hundred forty-three million, four thousand, one hundred eleven".