121188208 has 20 divisors (see below), whose sum is σ = 235375560. Its totient is φ = 60446144.

The previous prime is 121188203. The next prime is 121188227. The reversal of 121188208 is 802881121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121188208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121188203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2335 + ... + 15742.

It is an arithmetic number, because the mean of its divisors is an integer number (11768778).

Almost surely, 2^121188208 is an apocalyptic number.

It is an amenable number.

121188208 is a deficient number, since it is larger than the sum of its proper divisors (114187352).

121188208 is a wasteful number, since it uses less digits than its factorization.

121188208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18504 (or 18498 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 31.

The square root of 121188208 is about 11008.5515850179. The cubic root of 121188208 is about 494.8650558933.

The spelling of 121188208 in words is "one hundred twenty-one million, one hundred eighty-eight thousand, two hundred eight".