21320330410343 has 2 divisors, whose sum is σ = 21320330410344. Its totient is φ = 21320330410342.

The previous prime is 21320330410333. The next prime is 21320330410387. The reversal of 21320330410343 is 34301403302312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21320330410343 - 2⁸ = 21320330410087 is a prime.

It is a super-2 number, since 2×21320330410343² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21320330410333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10660165205171 + 10660165205172.

It is an arithmetic number, because the mean of its divisors is an integer number (10660165205172).

Almost surely, 2^{21320330410343} is an apocalyptic number.

21320330410343 is a deficient number, since it is larger than the sum of its proper divisors (1).

21320330410343 is an equidigital number, since it uses as much as digits as its factorization.

21320330410343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 21320330410343 its reverse (34301403302312), we get a palindrome (55621733712655).

The spelling of 21320330410343 in words is "twenty-one trillion, three hundred twenty billion, three hundred thirty million, four hundred ten thousand, three hundred forty-three".