11394221 has 4 divisors (see below), whose sum is σ = 11564352. Its totient is φ = 11224092.

The previous prime is 11394217. The next prime is 11394241. The reversal of 11394221 is 12249311.

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.

It is a cyclic number.

It is not a de Polignac number, because 11394221 - 2² = 11394217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11394241) 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, 84965 + ... + 85098.

It is an arithmetic number, because the mean of its divisors is an integer number (2891088).

Almost surely, 2^11394221 is an apocalyptic number.

It is an amenable number.

11394221 is a deficient number, since it is larger than the sum of its proper divisors (170131).

11394221 is an equidigital number, since it uses as much as digits as its factorization.

11394221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170130.

The product of its digits is 432, while the sum is 23.

The square root of 11394221 is about 3375.5326987011. The cubic root of 11394221 is about 225.0236748751.

The spelling of 11394221 in words is "eleven million, three hundred ninety-four thousand, two hundred twenty-one".