221232112213 has 8 divisors (see below), whose sum is σ = 253437265280. Its totient is φ = 189177100560.

The previous prime is 221232112187. The next prime is 221232112259. The reversal of 221232112213 is 312211232122.

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

It is not a de Polignac number, because 221232112213 - 2⁹ = 221232111701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221232115213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37532193 + ... + 37538086.

It is an arithmetic number, because the mean of its divisors is an integer number (31679658160).

Almost surely, 2^221232112213 is an apocalyptic number.

It is an amenable number.

221232112213 is a deficient number, since it is larger than the sum of its proper divisors (32205153067).

221232112213 is an equidigital number, since it uses as much as digits as its factorization.

221232112213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75070707.

The product of its digits is 576, while the sum is 22.

Adding to 221232112213 its reverse (312211232122), we get a palindrome (533443344335).

The spelling of 221232112213 in words is "two hundred twenty-one billion, two hundred thirty-two million, one hundred twelve thousand, two hundred thirteen".