221103321 has 8 divisors (see below), whose sum is σ = 295563840. Its totient is φ = 147022512.

The previous prime is 221103307. The next prime is 221103329. The reversal of 221103321 is 123301122.

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

It is not a de Polignac number, because 221103321 - 2⁷ = 221103193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221103321.

It is not an unprimeable number, because it can be changed into a prime (221103329) 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, 93565 + ... + 95898.

It is an arithmetic number, because the mean of its divisors is an integer number (36945480).

Almost surely, 2^221103321 is an apocalyptic number.

It is an amenable number.

221103321 is a deficient number, since it is larger than the sum of its proper divisors (74460519).

221103321 is a wasteful number, since it uses less digits than its factorization.

221103321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189855.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 221103321 is about 14869.5434025393. The cubic root of 221103321 is about 604.6885640681.

Adding to 221103321 its reverse (123301122), we get a palindrome (344404443).

The spelling of 221103321 in words is "two hundred twenty-one million, one hundred three thousand, three hundred twenty-one".