121673309939 has 8 divisors (see below), whose sum is σ = 121922351232. Its totient is φ = 121424466240.

The previous prime is 121673309909. The next prime is 121673309977. The reversal of 121673309939 is 939903376121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121673309939 - 2²⁰ = 121672261363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121673309909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1216382 + ... + 1312604.

It is an arithmetic number, because the mean of its divisors is an integer number (15240293904).

Almost surely, 2^121673309939 is an apocalyptic number.

121673309939 is a deficient number, since it is larger than the sum of its proper divisors (249041293).

121673309939 is an equidigital number, since it uses as much as digits as its factorization.

121673309939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98797.

The product of its (nonzero) digits is 1653372, while the sum is 53.

The spelling of 121673309939 in words is "one hundred twenty-one billion, six hundred seventy-three million, three hundred nine thousand, nine hundred thirty-nine".