121683385 has 8 divisors (see below), whose sum is σ = 146116296. Its totient is φ = 97282560.

The previous prime is 121683379. The next prime is 121683413. The reversal of 121683385 is 583386121.

It can be written as a sum of positive squares in 4 ways, for example, as 9916201 + 111767184 = 3149^2 + 10572^2 .

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

It is not a de Polignac number, because 121683385 - 2³ = 121683377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1315 + ... + 15655.

It is an arithmetic number, because the mean of its divisors is an integer number (18264537).

Almost surely, 2^121683385 is an apocalyptic number.

It is an amenable number.

121683385 is a deficient number, since it is larger than the sum of its proper divisors (24432911).

121683385 is a wasteful number, since it uses less digits than its factorization.

121683385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16043.

The product of its digits is 34560, while the sum is 37.

The square root of 121683385 is about 11031.0192185491. The cubic root of 121683385 is about 495.5381488717.

The spelling of 121683385 in words is "one hundred twenty-one million, six hundred eighty-three thousand, three hundred eighty-five".