111221022223 has 16 divisors (see below), whose sum is σ = 113420831040. Its totient is φ = 109044182016.

The previous prime is 111221022203. The next prime is 111221022257. The reversal of 111221022223 is 322220122111.

It is a cyclic number.

It is not a de Polignac number, because 111221022223 - 2⁹ = 111221021711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111221022223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221022203) 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, 11785915 + ... + 11795347.

It is an arithmetic number, because the mean of its divisors is an integer number (7088801940).

Almost surely, 2^111221022223 is an apocalyptic number.

111221022223 is a deficient number, since it is larger than the sum of its proper divisors (2199808817).

111221022223 is an equidigital number, since it uses as much as digits as its factorization.

111221022223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10626.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 111221022223 its reverse (322220122111), we get a palindrome (433441144334).

The spelling of 111221022223 in words is "one hundred eleven billion, two hundred twenty-one million, twenty-two thousand, two hundred twenty-three".