111422111 has 2 divisors, whose sum is σ = 111422112. Its totient is φ = 111422110.

The previous prime is 111422107. The next prime is 111422117. The reversal of 111422111 is 111224111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111422111 - 2² = 111422107 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111422117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55711055 + 55711056.

It is an arithmetic number, because the mean of its divisors is an integer number (55711056).

Almost surely, 2^111422111 is an apocalyptic number.

111422111 is a deficient number, since it is larger than the sum of its proper divisors (1).

111422111 is an equidigital number, since it uses as much as digits as its factorization.

111422111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16, while the sum is 14.

The square root of 111422111 is about 10555.6672456079. The cubic root of 111422111 is about 481.1979783876.

Adding to 111422111 its reverse (111224111), we get a palindrome (222646222).

The spelling of 111422111 in words is "one hundred eleven million, four hundred twenty-two thousand, one hundred eleven".