121212008 has 16 divisors (see below), whose sum is σ = 227556000. Its totient is φ = 60530416.

The previous prime is 121211999. The next prime is 121212017. The reversal of 121212008 is 800212121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121211999) and next prime (121212017).

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 3 ways as a sum of consecutive naturals, for example, 2318 + ... + 15741.

It is an arithmetic number, because the mean of its divisors is an integer number (14222250).

Almost surely, 2^121212008 is an apocalyptic number.

It is an amenable number.

121212008 is a deficient number, since it is larger than the sum of its proper divisors (106343992).

121212008 is a wasteful number, since it uses less digits than its factorization.

121212008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18904 (or 18900 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 121212008 is about 11009.6325097616. The cubic root of 121212008 is about 494.8974490818.

Adding to 121212008 its reverse (800212121), we get a palindrome (921424129).

The spelling of 121212008 in words is "one hundred twenty-one million, two hundred twelve thousand, eight".