11211109 has 16 divisors (see below), whose sum is σ = 14611968. Its totient is φ = 8347392.

The previous prime is 11211103. The next prime is 11211131. The reversal of 11211109 is 90111211.

It is a cyclic number.

It is not a de Polignac number, because 11211109 - 2⁵ = 11211077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11211092 and 11211101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211103) 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 15 ways as a sum of consecutive naturals, for example, 2077 + ... + 5170.

It is an arithmetic number, because the mean of its divisors is an integer number (913248).

Almost surely, 2^11211109 is an apocalyptic number.

It is an amenable number.

11211109 is a deficient number, since it is larger than the sum of its proper divisors (3400859).

11211109 is a wasteful number, since it uses less digits than its factorization.

11211109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7284.

The product of its (nonzero) digits is 18, while the sum is 16.

The square root of 11211109 is about 3348.2994191082. The cubic root of 11211109 is about 223.8117372786.

The spelling of 11211109 in words is "eleven million, two hundred eleven thousand, one hundred nine".