11102209 has 4 divisors (see below), whose sum is σ = 11117104. Its totient is φ = 11087316.

The previous prime is 11102197. The next prime is 11102219. The reversal of 11102209 is 90220111.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90220111 = 1399 ⋅64489.

It is a cyclic number.

It is not a de Polignac number, because 11102209 - 2⁵ = 11102177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11102192 and 11102201.

It is not an unprimeable number, because it can be changed into a prime (11102219) 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, 6267 + ... + 7840.

It is an arithmetic number, because the mean of its divisors is an integer number (2779276).

Almost surely, 2^11102209 is an apocalyptic number.

It is an amenable number.

11102209 is a deficient number, since it is larger than the sum of its proper divisors (14895).

11102209 is an equidigital number, since it uses as much as digits as its factorization.

11102209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14894.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 11102209 is about 3331.9977490989. The cubic root of 11102209 is about 223.0847071067.

It can be divided in two parts, 11102 and 209, that added together give a palindrome (11311).

The spelling of 11102209 in words is "eleven million, one hundred two thousand, two hundred nine".