111321109 has 16 divisors (see below), whose sum is σ = 117621504. Its totient is φ = 105235200.

The previous prime is 111321107. The next prime is 111321121. The reversal of 111321109 is 901123111.

It is a cyclic number.

It is not a de Polignac number, because 111321109 - 2¹ = 111321107 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 (111321107) 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, 410644 + ... + 410914.

It is an arithmetic number, because the mean of its divisors is an integer number (7351344).

Almost surely, 2^111321109 is an apocalyptic number.

It is an amenable number.

111321109 is a deficient number, since it is larger than the sum of its proper divisors (6300395).

111321109 is a wasteful number, since it uses less digits than its factorization.

111321109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588.

The product of its (nonzero) digits is 54, while the sum is 19.

The square root of 111321109 is about 10550.8819062674. The cubic root of 111321109 is about 481.0525355285.

It can be divided in two parts, 1113 and 21109, that added together give a palindrome (22222).

The spelling of 111321109 in words is "one hundred eleven million, three hundred twenty-one thousand, one hundred nine".