11984221 has 8 divisors (see below), whose sum is σ = 12556800. Its totient is φ = 11422320.

The previous prime is 11984213. The next prime is 11984233. The reversal of 11984221 is 12248911.

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 11984221 - 2³ = 11984213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11984221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11984251) 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, 325 + ... + 4906.

It is an arithmetic number, because the mean of its divisors is an integer number (1569600).

Almost surely, 2^11984221 is an apocalyptic number.

It is an amenable number.

11984221 is a deficient number, since it is larger than the sum of its proper divisors (572579).

11984221 is an equidigital number, since it uses as much as digits as its factorization.

11984221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5339.

The product of its digits is 1152, while the sum is 28.

The square root of 11984221 is about 3461.8233634892. The cubic root of 11984221 is about 228.8424575735.

The spelling of 11984221 in words is "eleven million, nine hundred eighty-four thousand, two hundred twenty-one".