111240133 has 2 divisors, whose sum is σ = 111240134. Its totient is φ = 111240132.

The previous prime is 111240131. The next prime is 111240139. The reversal of 111240133 is 331042111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107371044 + 3869089 = 10362^2 + 1967^2 .

It is a cyclic number.

It is not a de Polignac number, because 111240133 - 2¹ = 111240131 is a prime.

Together with 111240131, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111240131) 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 as a sum of consecutive naturals, namely, 55620066 + 55620067.

It is an arithmetic number, because the mean of its divisors is an integer number (55620067).

Almost surely, 2^111240133 is an apocalyptic number.

It is an amenable number.

111240133 is a deficient number, since it is larger than the sum of its proper divisors (1).

111240133 is an equidigital number, since it uses as much as digits as its factorization.

111240133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 111240133 is about 10547.0438038343. The cubic root of 111240133 is about 480.9358665535.

Adding to 111240133 its reverse (331042111), we get a palindrome (442282244).

The spelling of 111240133 in words is "one hundred eleven million, two hundred forty thousand, one hundred thirty-three".