11202109 has 4 divisors (see below), whose sum is σ = 11209660. Its totient is φ = 11194560.

The previous prime is 11202097. The next prime is 11202119. The reversal of 11202109 is 90120211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 8139609 + 3062500 = 2853^2 + 1750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11202109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11202092 and 11202101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11202119) 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, 732 + ... + 4789.

It is an arithmetic number, because the mean of its divisors is an integer number (2802415).

Almost surely, 2^11202109 is an apocalyptic number.

It is an amenable number.

11202109 is a deficient number, since it is larger than the sum of its proper divisors (7551).

11202109 is an equidigital number, since it uses as much as digits as its factorization.

11202109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7550.

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

The square root of 11202109 is about 3346.9551834466. The cubic root of 11202109 is about 223.7518310764.

It can be divided in two parts, 11202 and 109, that added together give a palindrome (11311).

The spelling of 11202109 in words is "eleven million, two hundred two thousand, one hundred nine".