201184221 has 8 divisors (see below), whose sum is σ = 306566464. Its totient is φ = 114962400.

The previous prime is 201184219. The next prime is 201184259. The reversal of 201184221 is 122481102.

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

It is not a de Polignac number, because 201184221 - 2¹ = 201184219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 9580201 = 201184221 / (2 + 0 + 1 + 1 + 8 + 4 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201184201) 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, 4790080 + ... + 4790121.

It is an arithmetic number, because the mean of its divisors is an integer number (38320808).

Almost surely, 2^201184221 is an apocalyptic number.

201184221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201184221 is a deficient number, since it is larger than the sum of its proper divisors (105382243).

201184221 is an equidigital number, since it uses as much as digits as its factorization.

201184221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9580211.

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 201184221 is about 14183.9423645191. The cubic root of 201184221 is about 585.9555047424.

The spelling of 201184221 in words is "two hundred one million, one hundred eighty-four thousand, two hundred twenty-one".