21442302321443 has 2 divisors, whose sum is σ = 21442302321444. Its totient is φ = 21442302321442.

The previous prime is 21442302321353. The next prime is 21442302321449. The reversal of 21442302321443 is 34412320324412.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21442302321443 - 2¹⁴ = 21442302305059 is a prime.

It is not a weakly prime, because it can be changed into another prime (21442302321449) 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 as a sum of consecutive naturals, namely, 10721151160721 + 10721151160722.

It is an arithmetic number, because the mean of its divisors is an integer number (10721151160722).

Almost surely, 2^{21442302321443} is an apocalyptic number.

21442302321443 is a deficient number, since it is larger than the sum of its proper divisors (1).

21442302321443 is an equidigital number, since it uses as much as digits as its factorization.

21442302321443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 35.

Adding to 21442302321443 its reverse (34412320324412), we get a palindrome (55854622645855).

The spelling of 21442302321443 in words is "twenty-one trillion, four hundred forty-two billion, three hundred two million, three hundred twenty-one thousand, four hundred forty-three".