121887188 has 12 divisors (see below), whose sum is σ = 213468192. Its totient is φ = 60896280.

The previous prime is 121887187. The next prime is 121887209. The reversal of 121887188 is 881788121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121887187) 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, 5678 + ... + 16613.

It is an arithmetic number, because the mean of its divisors is an integer number (17789016).

Almost surely, 2^121887188 is an apocalyptic number.

It is an amenable number.

121887188 is a deficient number, since it is larger than the sum of its proper divisors (91581004).

121887188 is a wasteful number, since it uses less digits than its factorization.

121887188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23662 (or 23660 counting only the distinct ones).

The product of its digits is 57344, while the sum is 44.

The square root of 121887188 is about 11040.2530768094. The cubic root of 121887188 is about 495.8146474013.

The spelling of 121887188 in words is "one hundred twenty-one million, eight hundred eighty-seven thousand, one hundred eighty-eight".