121888208 has 30 divisors (see below), whose sum is σ = 255727494. Its totient is φ = 56254848.

The previous prime is 121888183. The next prime is 121888237. The reversal of 121888208 is 802888121.

It can be written as a sum of positive squares in 3 ways, for example, as 183184 + 121705024 = 428^2 + 11032^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19835 + ... + 25242.

Almost surely, 2^121888208 is an apocalyptic number.

It is an amenable number.

121888208 is an abundant number, since it is smaller than the sum of its proper divisors (133839286).

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

121888208 is a wasteful number, since it uses less digits than its factorization.

121888208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45111 (or 45092 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 38.

The square root of 121888208 is about 11040.2992713060. The cubic root of 121888208 is about 495.8160304549.

The spelling of 121888208 in words is "one hundred twenty-one million, eight hundred eighty-eight thousand, two hundred eight".