11843221 has 8 divisors (see below), whose sum is σ = 12995640. Its totient is φ = 10725312.

The previous prime is 11843207. The next prime is 11843231. The reversal of 11843221 is 12234811.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3496900 + 8346321 = 1870^2 + 2889^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11843221 - 2⁷ = 11843093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11843192 and 11843201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11843231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7906 + ... + 9283.

It is an arithmetic number, because the mean of its divisors is an integer number (1624455).

Almost surely, 2^11843221 is an apocalyptic number.

It is an amenable number.

11843221 is a deficient number, since it is larger than the sum of its proper divisors (1152419).

11843221 is a wasteful number, since it uses less digits than its factorization.

11843221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17255.

The product of its digits is 384, while the sum is 22.

The square root of 11843221 is about 3441.3981170449. The cubic root of 11843221 is about 227.9414348913.

The spelling of 11843221 in words is "eleven million, eight hundred forty-three thousand, two hundred twenty-one".