221232213032321 has 16 divisors (see below), whose sum is σ = 227125793664000. Its totient is φ = 215436022190928.

The previous prime is 221232213032291. The next prime is 221232213032323. The reversal of 221232213032321 is 123230312232122.

221232213032321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 221232213032321 - 2¹⁴ = 221232213015937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221232213032323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60822461 + ... + 64357098.

It is an arithmetic number, because the mean of its divisors is an integer number (14195362104000).

Almost surely, 2^{221232213032321} is an apocalyptic number.

It is an amenable number.

221232213032321 is a deficient number, since it is larger than the sum of its proper divisors (5893580631679).

221232213032321 is a wasteful number, since it uses less digits than its factorization.

221232213032321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125179948.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 221232213032321 its reverse (123230312232122), we get a palindrome (344462525264443).

The spelling of 221232213032321 in words is "two hundred twenty-one trillion, two hundred thirty-two billion, two hundred thirteen million, thirty-two thousand, three hundred twenty-one".