111319221 has 16 divisors (see below), whose sum is σ = 160465536. Its totient is φ = 68237376.

The previous prime is 111319189. The next prime is 111319231. The reversal of 111319221 is 122913111.

It is a happy number.

It is not a de Polignac number, because 111319221 - 2⁵ = 111319189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111319231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4831 + ... + 15683.

It is an arithmetic number, because the mean of its divisors is an integer number (10029096).

Almost surely, 2^111319221 is an apocalyptic number.

It is an amenable number.

111319221 is a deficient number, since it is larger than the sum of its proper divisors (49146315).

111319221 is a wasteful number, since it uses less digits than its factorization.

111319221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11132.

The product of its digits is 108, while the sum is 21.

The square root of 111319221 is about 10550.7924346942. The cubic root of 111319221 is about 481.0498159714.

The spelling of 111319221 in words is "one hundred eleven million, three hundred nineteen thousand, two hundred twenty-one".