111221402223 has 16 divisors (see below), whose sum is σ = 148510567296. Its totient is φ = 74039975520.

The previous prime is 111221402221. The next prime is 111221402311. The reversal of 111221402223 is 322204122111.

It is a happy number.

It is not a de Polignac number, because 111221402223 - 2¹ = 111221402221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111221402223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221402221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14548240 + ... + 14555882.

It is an arithmetic number, because the mean of its divisors is an integer number (9281910456).

Almost surely, 2^111221402223 is an apocalyptic number.

111221402223 is a deficient number, since it is larger than the sum of its proper divisors (37289165073).

111221402223 is an equidigital number, since it uses as much as digits as its factorization.

111221402223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14054.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 111221402223 its reverse (322204122111), we get a palindrome (433425524334).

The spelling of 111221402223 in words is "one hundred eleven billion, two hundred twenty-one million, four hundred two thousand, two hundred twenty-three".