73108121 has 2 divisors, whose sum is σ = 73108122. Its totient is φ = 73108120.

The previous prime is 73108117. The next prime is 73108129. The reversal of 73108121 is 12180137.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72914521 + 193600 = 8539^2 + 440^2 .

It is a cyclic number.

It is not a de Polignac number, because 73108121 - 2² = 73108117 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73108129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36554060 + 36554061.

It is an arithmetic number, because the mean of its divisors is an integer number (36554061).

Almost surely, 2^73108121 is an apocalyptic number.

It is an amenable number.

73108121 is a deficient number, since it is larger than the sum of its proper divisors (1).

73108121 is an equidigital number, since it uses as much as digits as its factorization.

73108121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 73108121 is about 8550.3287071317. The cubic root of 73108121 is about 418.1401531654.

Adding to 73108121 its reverse (12180137), we get a palindrome (85288258).

The spelling of 73108121 in words is "seventy-three million, one hundred eight thousand, one hundred twenty-one".