221103320311 has 4 divisors (see below), whose sum is σ = 224132132992. Its totient is φ = 218074507632.

The previous prime is 221103320309. The next prime is 221103320327. The reversal of 221103320311 is 113023301122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221103320311 - 2¹ = 221103320309 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 (221103320341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1514406231 + ... + 1514406376.

It is an arithmetic number, because the mean of its divisors is an integer number (56033033248).

Almost surely, 2^221103320311 is an apocalyptic number.

221103320311 is a deficient number, since it is larger than the sum of its proper divisors (3028812681).

221103320311 is an equidigital number, since it uses as much as digits as its factorization.

221103320311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3028812680.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 221103320311 its reverse (113023301122), we get a palindrome (334126621433).

The spelling of 221103320311 in words is "two hundred twenty-one billion, one hundred three million, three hundred twenty thousand, three hundred eleven".