221344423111 has 16 divisors (see below), whose sum is σ = 276485529600. Its totient is φ = 172803450240.

The previous prime is 221344423103. The next prime is 221344423121. The reversal of 221344423111 is 111324443122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 221344423111 - 2³ = 221344423103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221344423111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221344423121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29996911 + ... + 30004288.

It is an arithmetic number, because the mean of its divisors is an integer number (17280345600).

Almost surely, 2^221344423111 is an apocalyptic number.

221344423111 is a deficient number, since it is larger than the sum of its proper divisors (55141106489).

221344423111 is a wasteful number, since it uses less digits than its factorization.

221344423111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60001254.

The product of its digits is 4608, while the sum is 28.

Adding to 221344423111 its reverse (111324443122), we get a palindrome (332668866233).

The spelling of 221344423111 in words is "two hundred twenty-one billion, three hundred forty-four million, four hundred twenty-three thousand, one hundred eleven".