11099 has 4 divisors (see below), whose sum is σ = 12120. Its totient is φ = 10080.

The previous prime is 11093. The next prime is 11113. The reversal of 11099 is 99011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99011 = 11 ⋅9001.

It is a cyclic number.

It is not a de Polignac number, because 11099 - 2⁴ = 11083 is a prime.

It is an Ulam number.

It is a Duffinian number.

11099 is a modest number, since divided by 99 gives 11 as remainder.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 11099.

It is not an unprimeable number, because it can be changed into a prime (11093) 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, 494 + ... + 515.

It is an arithmetic number, because the mean of its divisors is an integer number (3030).

2¹¹⁰⁹⁹ is an apocalyptic number.

11099 is a deficient number, since it is larger than the sum of its proper divisors (1021).

11099 is a wasteful number, since it uses less digits than its factorization.

11099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020.

The product of its (nonzero) digits is 81, while the sum is 20.

The square root of 11099 is about 105.3517916317. The cubic root of 11099 is about 22.3063211450.

The spelling of 11099 in words is "eleven thousand, ninety-nine".