121836668 has 6 divisors (see below), whose sum is σ = 213214176. Its totient is φ = 60918332.

The previous prime is 121836661. The next prime is 121836679. The reversal of 121836668 is 866638121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121836661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15229580 + ... + 15229587.

It is an arithmetic number, because the mean of its divisors is an integer number (35535696).

Almost surely, 2^121836668 is an apocalyptic number.

It is an amenable number.

121836668 is a deficient number, since it is larger than the sum of its proper divisors (91377508).

121836668 is a wasteful number, since it uses less digits than its factorization.

121836668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30459171 (or 30459169 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The square root of 121836668 is about 11037.9648486485. The cubic root of 121836668 is about 495.7461359143.

The spelling of 121836668 in words is "one hundred twenty-one million, eight hundred thirty-six thousand, six hundred sixty-eight".