111000033221 has 16 divisors (see below), whose sum is σ = 138396958080. Its totient is φ = 86488966080.

The previous prime is 111000033167. The next prime is 111000033239. The reversal of 111000033221 is 122330000111.

It is a de Polignac number, because none of the positive numbers 2^k-111000033221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111000033196 and 111000033205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111000033251) 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, 2713895 + ... + 2754491.

It is an arithmetic number, because the mean of its divisors is an integer number (8649809880).

Almost surely, 2^111000033221 is an apocalyptic number.

111000033221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111000033221 is a deficient number, since it is larger than the sum of its proper divisors (27396924859).

111000033221 is a wasteful number, since it uses less digits than its factorization.

111000033221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76124.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 111000033221 its reverse (122330000111), we get a palindrome (233330033332).

The spelling of 111000033221 in words is "one hundred eleven billion, thirty-three thousand, two hundred twenty-one".