42221141321 has 2 divisors, whose sum is σ = 42221141322. Its totient is φ = 42221141320.

The previous prime is 42221141309. The next prime is 42221141329. The reversal of 42221141321 is 12314112224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26959998025 + 15261143296 = 164195^2 + 123536^2 .

It is a cyclic number.

It is not a de Polignac number, because 42221141321 - 2¹⁴ = 42221124937 is a prime.

It is not a weakly prime, because it can be changed into another prime (42221141329) 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 as a sum of consecutive naturals, namely, 21110570660 + 21110570661.

It is an arithmetic number, because the mean of its divisors is an integer number (21110570661).

Almost surely, 2^42221141321 is an apocalyptic number.

It is an amenable number.

42221141321 is a deficient number, since it is larger than the sum of its proper divisors (1).

42221141321 is an equidigital number, since it uses as much as digits as its factorization.

42221141321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 23.

Adding to 42221141321 its reverse (12314112224), we get a palindrome (54535253545).

The spelling of 42221141321 in words is "forty-two billion, two hundred twenty-one million, one hundred forty-one thousand, three hundred twenty-one".