111120071 has 2 divisors, whose sum is σ = 111120072. Its totient is φ = 111120070.

The previous prime is 111120067. The next prime is 111120073. The reversal of 111120071 is 170021111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111120071 - 2² = 111120067 is a prime.

Together with 111120073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111120073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55560035 + 55560036.

It is an arithmetic number, because the mean of its divisors is an integer number (55560036).

Almost surely, 2^111120071 is an apocalyptic number.

111120071 is a deficient number, since it is larger than the sum of its proper divisors (1).

111120071 is an equidigital number, since it uses as much as digits as its factorization.

111120071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14, while the sum is 14.

The square root of 111120071 is about 10541.3505301740. The cubic root of 111120071 is about 480.7627788177.

Adding to 111120071 its reverse (170021111), we get a palindrome (281141182).

The spelling of 111120071 in words is "one hundred eleven million, one hundred twenty thousand, seventy-one".