11121689 has 8 divisors (see below), whose sum is σ = 11819808. Its totient is φ = 10428480.

The previous prime is 11121683. The next prime is 11121709. The reversal of 11121689 is 98612111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11121689 - 2⁸ = 11121433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11121683) 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 in 7 ways as a sum of consecutive naturals, for example, 4154 + ... + 6284.

It is an arithmetic number, because the mean of its divisors is an integer number (1477476).

Almost surely, 2^11121689 is an apocalyptic number.

It is an amenable number.

11121689 is a deficient number, since it is larger than the sum of its proper divisors (698119).

11121689 is a wasteful number, since it uses less digits than its factorization.

11121689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455.

The product of its digits is 864, while the sum is 29.

The square root of 11121689 is about 3334.9196392117. The cubic root of 11121689 is about 223.2151061084.

The spelling of 11121689 in words is "eleven million, one hundred twenty-one thousand, six hundred eighty-nine".