11221409 has 8 divisors (see below), whose sum is σ = 11560032. Its totient is φ = 10886400.

The previous prime is 11221393. The next prime is 11221417. The reversal of 11221409 is 90412211.

11221409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11221409 - 2⁴ = 11221393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6209 + ... + 7809.

It is an arithmetic number, because the mean of its divisors is an integer number (1445004).

Almost surely, 2^11221409 is an apocalyptic number.

It is an amenable number.

11221409 is a deficient number, since it is larger than the sum of its proper divisors (338623).

11221409 is a wasteful number, since it uses less digits than its factorization.

11221409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 11221409 is about 3349.8371602214. The cubic root of 11221409 is about 223.8802572702.

The spelling of 11221409 in words is "eleven million, two hundred twenty-one thousand, four hundred nine".