73533521334121 has 2 divisors, whose sum is σ = 73533521334122. Its totient is φ = 73533521334120.

The previous prime is 73533521334103. The next prime is 73533521334209. The reversal of 73533521334121 is 12143312533537.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56529947449600 + 17003573884521 = 7518640^2 + 4123539^2 .

It is a cyclic number.

It is not a de Polignac number, because 73533521334121 - 2⁵ = 73533521334089 is a prime.

It is not a weakly prime, because it can be changed into another prime (73533521344121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36766760667060 + 36766760667061.

It is an arithmetic number, because the mean of its divisors is an integer number (36766760667061).

Almost surely, 2^{73533521334121} is an apocalyptic number.

It is an amenable number.

73533521334121 is a deficient number, since it is larger than the sum of its proper divisors (1).

73533521334121 is an equidigital number, since it uses as much as digits as its factorization.

73533521334121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 43.

Adding to 73533521334121 its reverse (12143312533537), we get a palindrome (85676833867658).

The spelling of 73533521334121 in words is "seventy-three trillion, five hundred thirty-three billion, five hundred twenty-one million, three hundred thirty-four thousand, one hundred twenty-one".