221324201 has 8 divisors (see below), whose sum is σ = 261664320. Its totient is φ = 183164688.

The previous prime is 221324189. The next prime is 221324203. The reversal of 221324201 is 102423122.

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

It is not a de Polignac number, because 221324201 - 2¹⁸ = 221062057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 221324201.

It is not an unprimeable number, because it can be changed into a prime (221324203) 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, 544931 + ... + 545336.

It is an arithmetic number, because the mean of its divisors is an integer number (32708040).

Almost surely, 2^221324201 is an apocalyptic number.

It is an amenable number.

221324201 is a deficient number, since it is larger than the sum of its proper divisors (40340119).

221324201 is a wasteful number, since it uses less digits than its factorization.

221324201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090303.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 221324201 is about 14876.9688108835. The cubic root of 221324201 is about 604.8898563235.

Adding to 221324201 its reverse (102423122), we get a palindrome (323747323).

The spelling of 221324201 in words is "two hundred twenty-one million, three hundred twenty-four thousand, two hundred one".