111441427 has 2 divisors, whose sum is σ = 111441428. Its totient is φ = 111441426.

The previous prime is 111441401. The next prime is 111441431. The reversal of 111441427 is 724144111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111441427 - 2¹¹ = 111439379 is a prime.

It is not a weakly prime, because it can be changed into another prime (111441437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55720713 + 55720714.

It is an arithmetic number, because the mean of its divisors is an integer number (55720714).

Almost surely, 2^111441427 is an apocalyptic number.

111441427 is a deficient number, since it is larger than the sum of its proper divisors (1).

111441427 is an equidigital number, since it uses as much as digits as its factorization.

111441427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 896, while the sum is 25.

The square root of 111441427 is about 10556.5821646971. The cubic root of 111441427 is about 481.2257834107.

Adding to 111441427 its reverse (724144111), we get a palindrome (835585538).

The spelling of 111441427 in words is "one hundred eleven million, four hundred forty-one thousand, four hundred twenty-seven".