121679773 has 2 divisors, whose sum is σ = 121679774. Its totient is φ = 121679772.

The previous prime is 121679749. The next prime is 121679777. The reversal of 121679773 is 377976121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110208004 + 11471769 = 10498^2 + 3387^2 .

It is an emirp because it is prime and its reverse (377976121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121679773 - 2⁵ = 121679741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121679777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60839886 + 60839887.

It is an arithmetic number, because the mean of its divisors is an integer number (60839887).

Almost surely, 2^121679773 is an apocalyptic number.

It is an amenable number.

121679773 is a deficient number, since it is larger than the sum of its proper divisors (1).

121679773 is an equidigital number, since it uses as much as digits as its factorization.

121679773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 111132, while the sum is 43.

The square root of 121679773 is about 11030.8554971951. The cubic root of 121679773 is about 495.5332457058.

The spelling of 121679773 in words is "one hundred twenty-one million, six hundred seventy-nine thousand, seven hundred seventy-three".