442130203321 has 2 divisors, whose sum is σ = 442130203322. Its totient is φ = 442130203320.

The previous prime is 442130203303. The next prime is 442130203331. The reversal of 442130203321 is 123302031244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 440318509225 + 1811694096 = 663565^2 + 42564^2 .

It is a cyclic number.

It is not a de Polignac number, because 442130203321 - 2¹⁷ = 442130072249 is a prime.

It is not a weakly prime, because it can be changed into another prime (442130203331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221065101660 + 221065101661.

It is an arithmetic number, because the mean of its divisors is an integer number (221065101661).

Almost surely, 2^442130203321 is an apocalyptic number.

It is an amenable number.

442130203321 is a deficient number, since it is larger than the sum of its proper divisors (1).

442130203321 is an equidigital number, since it uses as much as digits as its factorization.

442130203321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 442130203321 its reverse (123302031244), we get a palindrome (565432234565).

The spelling of 442130203321 in words is "four hundred forty-two billion, one hundred thirty million, two hundred three thousand, three hundred twenty-one".