220234402321 has 4 divisors (see below), whose sum is σ = 220716316132. Its totient is φ = 219752488512.

The previous prime is 220234402259. The next prime is 220234402351. The reversal of 220234402321 is 123204432022.

220234402321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 203005214721 + 17229187600 = 450561^2 + 131260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220234402321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220234402351) 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 3 ways as a sum of consecutive naturals, for example, 240956220 + ... + 240957133.

It is an arithmetic number, because the mean of its divisors is an integer number (55179079033).

Almost surely, 2^220234402321 is an apocalyptic number.

It is an amenable number.

220234402321 is a deficient number, since it is larger than the sum of its proper divisors (481913811).

220234402321 is an equidigital number, since it uses as much as digits as its factorization.

220234402321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481913810.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 220234402321 its reverse (123204432022), we get a palindrome (343438834343).

The spelling of 220234402321 in words is "two hundred twenty billion, two hundred thirty-four million, four hundred two thousand, three hundred twenty-one".