220031012332321 has 4 divisors (see below), whose sum is σ = 220031061452100. Its totient is φ = 220030963212544.

The previous prime is 220031012332319. The next prime is 220031012332333. The reversal of 220031012332321 is 123233210130022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 164988501696225 + 55042510636096 = 12844785^2 + 7419064^2 .

It is a cyclic number.

It is not a de Polignac number, because 220031012332321 - 2¹ = 220031012332319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220031012332421) 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, 17081656 + ... + 27052633.

It is an arithmetic number, because the mean of its divisors is an integer number (55007765363025).

Almost surely, 2^{220031012332321} is an apocalyptic number.

It is an amenable number.

220031012332321 is a deficient number, since it is larger than the sum of its proper divisors (49119779).

220031012332321 is an equidigital number, since it uses as much as digits as its factorization.

220031012332321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49119778.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 220031012332321 its reverse (123233210130022), we get a palindrome (343264222462343).

The spelling of 220031012332321 in words is "two hundred twenty trillion, thirty-one billion, twelve million, three hundred thirty-two thousand, three hundred twenty-one".