121683667 has 4 divisors (see below), whose sum is σ = 139067056. Its totient is φ = 104300280.

The previous prime is 121683659. The next prime is 121683677. The reversal of 121683667 is 766386121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 766386121 = 5743 ⋅133447.

It is not a de Polignac number, because 121683667 - 2³ = 121683659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121683677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8691684 + ... + 8691697.

It is an arithmetic number, because the mean of its divisors is an integer number (34766764).

Almost surely, 2^121683667 is an apocalyptic number.

121683667 is a deficient number, since it is larger than the sum of its proper divisors (17383389).

121683667 is an equidigital number, since it uses as much as digits as its factorization.

121683667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17383388.

The product of its digits is 72576, while the sum is 40.

The square root of 121683667 is about 11031.0320006788. The cubic root of 121683667 is about 495.5385316730.

The spelling of 121683667 in words is "one hundred twenty-one million, six hundred eighty-three thousand, six hundred sixty-seven".