221330111 has 8 divisors (see below), whose sum is σ = 228877824. Its totient is φ = 213807960.

The previous prime is 221330071. The next prime is 221330119. The reversal of 221330111 is 111033122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221330111 - 2⁶ = 221330047 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 (221330119) 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 7 ways as a sum of consecutive naturals, for example, 12116 + ... + 24278.

It is an arithmetic number, because the mean of its divisors is an integer number (28609728).

Almost surely, 2^221330111 is an apocalyptic number.

221330111 is a deficient number, since it is larger than the sum of its proper divisors (7547713).

221330111 is a wasteful number, since it uses less digits than its factorization.

221330111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12781.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 221330111 is about 14877.1674387297. The cubic root of 221330111 is about 604.8952403818.

Adding to 221330111 its reverse (111033122), we get a palindrome (332363233).

The spelling of 221330111 in words is "two hundred twenty-one million, three hundred thirty thousand, one hundred eleven".