11106209 has 8 divisors (see below), whose sum is σ = 11410728. Its totient is φ = 10805760.

The previous prime is 11106191. The next prime is 11106223. The reversal of 11106209 is 90260111.

It can be written as a sum of positive squares in 4 ways, for example, as 183184 + 10923025 = 428^2 + 3305^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11106209 - 2²⁰ = 10057633 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 (11106229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4979 + ... + 6855.

It is an arithmetic number, because the mean of its divisors is an integer number (1426341).

Almost surely, 2^11106209 is an apocalyptic number.

It is an amenable number.

11106209 is a deficient number, since it is larger than the sum of its proper divisors (304519).

11106209 is an equidigital number, since it uses as much as digits as its factorization.

11106209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2035.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 11106209 is about 3332.5979355452. The cubic root of 11106209 is about 223.1114955198. Note that the first 3 decimals are identical.

The spelling of 11106209 in words is "eleven million, one hundred six thousand, two hundred nine".