121683 has 8 divisors (see below), whose sum is σ = 165888. Its totient is φ = 79304.

The previous prime is 121661. The next prime is 121687. The reversal of 121683 is 386121.

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 121683 - 2⁹ = 121171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291 + ... + 572.

It is an arithmetic number, because the mean of its divisors is an integer number (20736).

2¹²¹⁶⁸³ is an apocalyptic number.

121683 is a deficient number, since it is larger than the sum of its proper divisors (44205).

121683 is an equidigital number, since it uses as much as digits as its factorization.

121683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913.

The product of its digits is 288, while the sum is 21.

The square root of 121683 is about 348.8309045942. The cubic root of 121683 is about 49.5537626252.

The spelling of 121683 in words is "one hundred twenty-one thousand, six hundred eighty-three".