111421267 has 2 divisors, whose sum is σ = 111421268. Its totient is φ = 111421266.

The previous prime is 111421259. The next prime is 111421351. The reversal of 111421267 is 762124111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111421267 - 2³ = 111421259 is a prime.

It is not a weakly prime, because it can be changed into another prime (111421367) 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, 55710633 + 55710634.

It is an arithmetic number, because the mean of its divisors is an integer number (55710634).

Almost surely, 2^111421267 is an apocalyptic number.

111421267 is a deficient number, since it is larger than the sum of its proper divisors (1).

111421267 is an equidigital number, since it uses as much as digits as its factorization.

111421267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 25.

The square root of 111421267 is about 10555.6272670079. The cubic root of 111421267 is about 481.1967633920.

Adding to 111421267 its reverse (762124111), we get a palindrome (873545378).

The spelling of 111421267 in words is "one hundred eleven million, four hundred twenty-one thousand, two hundred sixty-seven".