221345332111 has 8 divisors (see below), whose sum is σ = 228983190480. Its totient is φ = 213707824512.

The previous prime is 221345332081. The next prime is 221345332123. The reversal of 221345332111 is 111233543122.

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

It is a de Polignac number, because none of the positive numbers 2^k-221345332111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221345332111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221345332181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2280376 + ... + 2375458.

It is an arithmetic number, because the mean of its divisors is an integer number (28622898810).

Almost surely, 2^221345332111 is an apocalyptic number.

221345332111 is a deficient number, since it is larger than the sum of its proper divisors (7637858369).

221345332111 is an equidigital number, since it uses as much as digits as its factorization.

221345332111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175385.

The product of its digits is 4320, while the sum is 28.

Adding to 221345332111 its reverse (111233543122), we get a palindrome (332578875233).

The spelling of 221345332111 in words is "two hundred twenty-one billion, three hundred forty-five million, three hundred thirty-two thousand, one hundred eleven".