21300335341 has 2 divisors, whose sum is σ = 21300335342. Its totient is φ = 21300335340.

The previous prime is 21300335311. The next prime is 21300335369. The reversal of 21300335341 is 14353300312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15062652900 + 6237682441 = 122730^2 + 78979^2 .

It is a cyclic number.

It is not a de Polignac number, because 21300335341 - 2³¹ = 19152851693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21300335311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650167670 + 10650167671.

It is an arithmetic number, because the mean of its divisors is an integer number (10650167671).

Almost surely, 2^21300335341 is an apocalyptic number.

It is an amenable number.

21300335341 is a deficient number, since it is larger than the sum of its proper divisors (1).

21300335341 is an equidigital number, since it uses as much as digits as its factorization.

21300335341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 25.

Adding to 21300335341 its reverse (14353300312), we get a palindrome (35653635653).

The spelling of 21300335341 in words is "twenty-one billion, three hundred million, three hundred thirty-five thousand, three hundred forty-one".