111120389 has 2 divisors, whose sum is σ = 111120390. Its totient is φ = 111120388.

The previous prime is 111120367. The next prime is 111120409. The reversal of 111120389 is 983021111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90345025 + 20775364 = 9505^2 + 4558^2 .

It is an emirp because it is prime and its reverse (983021111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111120389 - 2⁸ = 111120133 is a prime.

It is a super-2 number, since 2×111120389² = 24695481703022642, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111120319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55560194 + 55560195.

It is an arithmetic number, because the mean of its divisors is an integer number (55560195).

Almost surely, 2^111120389 is an apocalyptic number.

It is an amenable number.

111120389 is a deficient number, since it is larger than the sum of its proper divisors (1).

111120389 is an equidigital number, since it uses as much as digits as its factorization.

111120389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 111120389 is about 10541.3656136195. The cubic root of 111120389 is about 480.7632374280.

The spelling of 111120389 in words is "one hundred eleven million, one hundred twenty thousand, three hundred eighty-nine".