1091101 has 4 divisors (see below), whose sum is σ = 1190304. Its totient is φ = 991900.

The previous prime is 1091071. The next prime is 1091119. The reversal of 1091101 is 1011901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1091101 - 2⁹ = 1090589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49585 + ... + 49606.

It is an arithmetic number, because the mean of its divisors is an integer number (297576).

2^1091101 is an apocalyptic number.

1091101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1091101 is a deficient number, since it is larger than the sum of its proper divisors (99203).

1091101 is an equidigital number, since it uses as much as digits as its factorization.

1091101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99202.

The product of its (nonzero) digits is 9, while the sum is 13.

The square root of 1091101 is about 1044.5578011771. The cubic root of 1091101 is about 102.9488859404.

The spelling of 1091101 in words is "one million, ninety-one thousand, one hundred one".