121612208 has 20 divisors (see below), whose sum is σ = 238944528. Its totient is φ = 59949120.

The previous prime is 121612207. The next prime is 121612259. The reversal of 121612208 is 802216121.

It is not an unprimeable number, because it can be changed into a prime (121612207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52391 + ... + 54662.

Almost surely, 2^121612208 is an apocalyptic number.

It is an amenable number.

121612208 is a deficient number, since it is larger than the sum of its proper divisors (117332320).

121612208 is a wasteful number, since it uses less digits than its factorization.

121612208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107132 (or 107126 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 121612208 is about 11027.7925261586. The cubic root of 121612208 is about 495.4415106492.

Adding to 121612208 its reverse (802216121), we get a palindrome (923828329).

The spelling of 121612208 in words is "one hundred twenty-one million, six hundred twelve thousand, two hundred eight".