111120073 has 2 divisors, whose sum is σ = 111120074. Its totient is φ = 111120072.

The previous prime is 111120071. The next prime is 111120091. The reversal of 111120073 is 370021111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77387209 + 33732864 = 8797^2 + 5808^2 .

It is a cyclic number.

It is not a de Polignac number, because 111120073 - 2¹ = 111120071 is a prime.

Together with 111120071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (111120071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55560036 + 55560037.

It is an arithmetic number, because the mean of its divisors is an integer number (55560037).

Almost surely, 2^111120073 is an apocalyptic number.

It is an amenable number.

111120073 is a deficient number, since it is larger than the sum of its proper divisors (1).

111120073 is an equidigital number, since it uses as much as digits as its factorization.

111120073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 111120073 is about 10541.3506250385. The cubic root of 111120073 is about 480.7627817020.

Adding to 111120073 its reverse (370021111), we get a palindrome (481141184).

The spelling of 111120073 in words is "one hundred eleven million, one hundred twenty thousand, seventy-three".