121608073 has 2 divisors, whose sum is σ = 121608074. Its totient is φ = 121608072.

The previous prime is 121608043. The next prime is 121608077. The reversal of 121608073 is 370806121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71098624 + 50509449 = 8432^2 + 7107^2 .

It is a cyclic number.

It is not a de Polignac number, because 121608073 - 2¹⁷ = 121477001 is a prime.

It is not a weakly prime, because it can be changed into another prime (121608077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60804036 + 60804037.

It is an arithmetic number, because the mean of its divisors is an integer number (60804037).

Almost surely, 2^121608073 is an apocalyptic number.

It is an amenable number.

121608073 is a deficient number, since it is larger than the sum of its proper divisors (1).

121608073 is an equidigital number, since it uses as much as digits as its factorization.

121608073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 121608073 is about 11027.6050437074. The cubic root of 121608073 is about 495.4358953306.

The spelling of 121608073 in words is "one hundred twenty-one million, six hundred eight thousand, seventy-three".