121668508 has 36 divisors (see below), whose sum is σ = 231922488. Its totient is φ = 55823040.

The previous prime is 121668493. The next prime is 121668509. The reversal of 121668508 is 805866121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121668509) 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 11 ways as a sum of consecutive naturals, for example, 142210 + ... + 143062.

Almost surely, 2^121668508 is an apocalyptic number.

It is an amenable number.

121668508 is a deficient number, since it is larger than the sum of its proper divisors (110253980).

121668508 is a wasteful number, since it uses less digits than its factorization.

121668508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094 (or 1079 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 121668508 is about 11030.3448722150. The cubic root of 121668508 is about 495.5179532318.

The spelling of 121668508 in words is "one hundred twenty-one million, six hundred sixty-eight thousand, five hundred eight".