1101109 has 2 divisors, whose sum is σ = 1101110.
Its totient is φ = 1101108.
The previous prime is 1101103. The next prime is 1101127. The reversal of 1101109 is 9011011.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 1096209 + 4900 = 1047^2 + 70^2
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-1101109 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1101103) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550554 + 550555.
It is an arithmetic number, because the mean of its divisors is an integer number (550555).
21101109 is an apocalyptic number.
It is an amenable number.
1101109 is a deficient number, since it is larger than the sum of its proper divisors (1).
1101109 is an equidigital number, since it uses as much as digits as its factorization.
1101109 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 9, while the sum is 13.
The square root of 1101109 is about 1049.3374099878.
The cubic root of 1101109 is about 103.2626907621.
The spelling of 1101109 in words is "one million, one hundred one thousand, one hundred nine".