221200330321 has 4 divisors (see below), whose sum is σ = 221260590144. Its totient is φ = 221140070500.

The previous prime is 221200330301. The next prime is 221200330327. The reversal of 221200330321 is 123033002122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221200330321 - 2¹⁷ = 221200199249 is a prime.

It is a super-2 number, since 2×221200330321² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221200330327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30124405 + ... + 30131746.

It is an arithmetic number, because the mean of its divisors is an integer number (55315147536).

Almost surely, 2^221200330321 is an apocalyptic number.

It is an amenable number.

221200330321 is a deficient number, since it is larger than the sum of its proper divisors (60259823).

221200330321 is an equidigital number, since it uses as much as digits as its factorization.

221200330321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60259822.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 221200330321 its reverse (123033002122), we get a palindrome (344233332443).

The spelling of 221200330321 in words is "two hundred twenty-one billion, two hundred million, three hundred thirty thousand, three hundred twenty-one".