221000000111 has 16 divisors (see below), whose sum is σ = 260248066560. Its totient is φ = 185547220320.

The previous prime is 221000000101. The next prime is 221000000167. The reversal of 221000000111 is 111000000122.

221000000111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-221000000111 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 (221000000101) 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 15 ways as a sum of consecutive naturals, for example, 15053315 + ... + 15067988.

It is an arithmetic number, because the mean of its divisors is an integer number (16265504160).

Almost surely, 2^221000000111 is an apocalyptic number.

221000000111 is a deficient number, since it is larger than the sum of its proper divisors (39248066449).

221000000111 is a wasteful number, since it uses less digits than its factorization.

221000000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30121366.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 221000000111 its reverse (111000000122), we get a palindrome (332000000233).

The spelling of 221000000111 in words is "two hundred twenty-one billion, one hundred eleven", and thus it is an aban number.