220310231221 has 8 divisors (see below), whose sum is σ = 221044469184. Its totient is φ = 219576101760.

The previous prime is 220310231203. The next prime is 220310231233. The reversal of 220310231221 is 122132013022.

220310231221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 220310231221 - 2¹¹ = 220310229173 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 (220310231291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7301061 + ... + 7331173.

It is an arithmetic number, because the mean of its divisors is an integer number (27630558648).

Almost surely, 2^220310231221 is an apocalyptic number.

It is an amenable number.

220310231221 is a deficient number, since it is larger than the sum of its proper divisors (734237963).

220310231221 is a wasteful number, since it uses less digits than its factorization.

220310231221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54251.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 220310231221 its reverse (122132013022), we get a palindrome (342442244243).

The spelling of 220310231221 in words is "two hundred twenty billion, three hundred ten million, two hundred thirty-one thousand, two hundred twenty-one".