1129111 has 2 divisors, whose sum is σ = 1129112. Its totient is φ = 1129110.

The previous prime is 1129109. The next prime is 1129127. The reversal of 1129111 is 1119211.

It is an a-pointer prime, because the next prime (1129127) can be obtained adding 1129111 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1129111 - 2¹ = 1129109 is a prime.

Together with 1129109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1129211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564555 + 564556.

It is an arithmetic number, because the mean of its divisors is an integer number (564556).

2^1129111 is an apocalyptic number.

1129111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129111 is an equidigital number, since it uses as much as digits as its factorization.

1129111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18, while the sum is 16.

The square root of 1129111 is about 1062.5963485727. The cubic root of 1129111 is about 104.1307219625.

The spelling of 1129111 in words is "one million, one hundred twenty-nine thousand, one hundred eleven".