21344033141 has 2 divisors, whose sum is σ = 21344033142. Its totient is φ = 21344033140.

The previous prime is 21344033111. The next prime is 21344033167. The reversal of 21344033141 is 14133044312.

It is a happy number.

It is an a-pointer prime, because the next prime (21344033167) can be obtained adding 21344033141 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21342288100 + 1745041 = 146090^2 + 1321^2 .

It is a cyclic number.

It is not a de Polignac number, because 21344033141 - 2⁶ = 21344033077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21344033141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21344033111) 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, 10672016570 + 10672016571.

It is an arithmetic number, because the mean of its divisors is an integer number (10672016571).

Almost surely, 2^21344033141 is an apocalyptic number.

It is an amenable number.

21344033141 is a deficient number, since it is larger than the sum of its proper divisors (1).

21344033141 is an equidigital number, since it uses as much as digits as its factorization.

21344033141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 21344033141 its reverse (14133044312), we get a palindrome (35477077453).

The spelling of 21344033141 in words is "twenty-one billion, three hundred forty-four million, thirty-three thousand, one hundred forty-one".