121616773 has 2 divisors, whose sum is σ = 121616774. Its totient is φ = 121616772.

The previous prime is 121616731. The next prime is 121616797. The reversal of 121616773 is 377616121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112508449 + 9108324 = 10607^2 + 3018^2 .

It is a cyclic number.

It is not a de Polignac number, because 121616773 - 2¹³ = 121608581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121617773) 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, 60808386 + 60808387.

It is an arithmetic number, because the mean of its divisors is an integer number (60808387).

Almost surely, 2^121616773 is an apocalyptic number.

It is an amenable number.

121616773 is a deficient number, since it is larger than the sum of its proper divisors (1).

121616773 is an equidigital number, since it uses as much as digits as its factorization.

121616773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 34.

The square root of 121616773 is about 11027.9995012695. Note that the first 3 decimals coincide. The cubic root of 121616773 is about 495.4477097587.

The spelling of 121616773 in words is "one hundred twenty-one million, six hundred sixteen thousand, seven hundred seventy-three".