121818008 has 32 divisors (see below), whose sum is σ = 250160400. Its totient is φ = 55267968.

The previous prime is 121817989. The next prime is 121818017. The reversal of 121818008 is 800818121.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 3791 + ... + 16062.

Almost surely, 2^121818008 is an apocalyptic number.

It is an amenable number.

121818008 is an abundant number, since it is smaller than the sum of its proper divisors (128342392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121818008 is a wasteful number, since it uses less digits than its factorization.

121818008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19931 (or 19927 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 29.

The square root of 121818008 is about 11037.1195517671. The cubic root of 121818008 is about 495.7208258131.

The spelling of 121818008 in words is "one hundred twenty-one million, eight hundred eighteen thousand, eight".