1101091 has 2 divisors, whose sum is σ = 1101092.
Its totient is φ = 1101090.
The previous prime is 1101071. The next prime is 1101097. The reversal of 1101091 is 1901011.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 1101091 - 215 = 1068323 is a prime.
It is not a weakly prime, because it can be changed into another prime (1101097) by changing a digit.
It is a good prime.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550545 + 550546.
It is an arithmetic number, because the mean of its divisors is an integer number (550546).
21101091 is an apocalyptic number.
1101091 is a deficient number, since it is larger than the sum of its proper divisors (1).
1101091 is an equidigital number, since it uses as much as digits as its factorization.
1101091 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 9, while the sum is 13.
The square root of 1101091 is about 1049.3288331119.
The cubic root of 1101091 is about 103.2621280752.
The spelling of 1101091 in words is "one million, one hundred one thousand, ninety-one".