111221311233 has 16 divisors (see below), whose sum is σ = 149470111296. Its totient is φ = 73560352320.

The previous prime is 111221311213. The next prime is 111221311247. The reversal of 111221311233 is 332113122111.

It is a de Polignac number, because none of the positive numbers 2^k-111221311233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111221311213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1390435 + ... + 1468247.

It is an arithmetic number, because the mean of its divisors is an integer number (9341881956).

Almost surely, 2^111221311233 is an apocalyptic number.

It is an amenable number.

111221311233 is a deficient number, since it is larger than the sum of its proper divisors (38248800063).

111221311233 is a wasteful number, since it uses less digits than its factorization.

111221311233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81584.

The product of its digits is 216, while the sum is 21.

Adding to 111221311233 its reverse (332113122111), we get a palindrome (443334433344).

The spelling of 111221311233 in words is "one hundred eleven billion, two hundred twenty-one million, three hundred eleven thousand, two hundred thirty-three".