111223589 has 2 divisors, whose sum is σ = 111223590. Its totient is φ = 111223588.

The previous prime is 111223579. The next prime is 111223621. The reversal of 111223589 is 985322111.

It is a happy number.

It is an a-pointer prime, because the next prime (111223621) can be obtained adding 111223589 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100661089 + 10562500 = 10033^2 + 3250^2 .

It is an emirp because it is prime and its reverse (985322111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111223589 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111223579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55611794 + 55611795.

It is an arithmetic number, because the mean of its divisors is an integer number (55611795).

Almost surely, 2^111223589 is an apocalyptic number.

It is an amenable number.

111223589 is a deficient number, since it is larger than the sum of its proper divisors (1).

111223589 is an equidigital number, since it uses as much as digits as its factorization.

111223589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 32.

The square root of 111223589 is about 10546.2594790760. The cubic root of 111223589 is about 480.9120232479.

The spelling of 111223589 in words is "one hundred eleven million, two hundred twenty-three thousand, five hundred eighty-nine".