21433442341 has 2 divisors, whose sum is σ = 21433442342. Its totient is φ = 21433442340.

The previous prime is 21433442323. The next prime is 21433442417. The reversal of 21433442341 is 14324433412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17977178241 + 3456264100 = 134079^2 + 58790^2 .

It is a cyclic number.

It is not a de Polignac number, because 21433442341 - 2¹¹ = 21433440293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21433442141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10716721170 + 10716721171.

It is an arithmetic number, because the mean of its divisors is an integer number (10716721171).

Almost surely, 2^21433442341 is an apocalyptic number.

It is an amenable number.

21433442341 is a deficient number, since it is larger than the sum of its proper divisors (1).

21433442341 is an equidigital number, since it uses as much as digits as its factorization.

21433442341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 31.

Adding to 21433442341 its reverse (14324433412), we get a palindrome (35757875753).

The spelling of 21433442341 in words is "twenty-one billion, four hundred thirty-three million, four hundred forty-two thousand, three hundred forty-one".