13541322350221 has 2 divisors, whose sum is σ = 13541322350222. Its totient is φ = 13541322350220.

The previous prime is 13541322350161. The next prime is 13541322350239. The reversal of 13541322350221 is 12205322314531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13424060620996 + 117261729225 = 3663886^2 + 342435^2 .

It is a cyclic number.

It is not a de Polignac number, because 13541322350221 - 2³¹ = 13539174866573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13541322390221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6770661175110 + 6770661175111.

It is an arithmetic number, because the mean of its divisors is an integer number (6770661175111).

Almost surely, 2^{13541322350221} is an apocalyptic number.

It is an amenable number.

13541322350221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13541322350221 is an equidigital number, since it uses as much as digits as its factorization.

13541322350221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 13541322350221 its reverse (12205322314531), we get a palindrome (25746644664752).

The spelling of 13541322350221 in words is "thirteen trillion, five hundred forty-one billion, three hundred twenty-two million, three hundred fifty thousand, two hundred twenty-one".