111122189 has 2 divisors, whose sum is σ = 111122190. Its totient is φ = 111122188.

The previous prime is 111122173. The next prime is 111122201. The reversal of 111122189 is 981221111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104142025 + 6980164 = 10205^2 + 2642^2 .

It is a cyclic number.

It is not a de Polignac number, because 111122189 - 2⁴ = 111122173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111122159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55561094 + 55561095.

It is an arithmetic number, because the mean of its divisors is an integer number (55561095).

Almost surely, 2^111122189 is an apocalyptic number.

It is an amenable number.

111122189 is a deficient number, since it is larger than the sum of its proper divisors (1).

111122189 is an equidigital number, since it uses as much as digits as its factorization.

111122189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 26.

The square root of 111122189 is about 10541.4509912061. The cubic root of 111122189 is about 480.7658333187.

The spelling of 111122189 in words is "one hundred eleven million, one hundred twenty-two thousand, one hundred eighty-nine".