111221035223 has 4 divisors (see below), whose sum is σ = 111394007928. Its totient is φ = 111048062520.

The previous prime is 111221035193. The next prime is 111221035271. The reversal of 111221035223 is 322530122111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322530122111 = 61 ⋅5287379051.

It is a cyclic number.

It is not a de Polignac number, because 111221035223 - 2³⁶ = 42501558487 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 (111221035273) 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 3 ways as a sum of consecutive naturals, for example, 86485388 + ... + 86486673.

It is an arithmetic number, because the mean of its divisors is an integer number (27848501982).

Almost surely, 2^111221035223 is an apocalyptic number.

111221035223 is a deficient number, since it is larger than the sum of its proper divisors (172972705).

111221035223 is an equidigital number, since it uses as much as digits as its factorization.

111221035223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172972704.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 111221035223 its reverse (322530122111), we get a palindrome (433751157334).

The spelling of 111221035223 in words is "one hundred eleven billion, two hundred twenty-one million, thirty-five thousand, two hundred twenty-three".