121533788 has 12 divisors (see below), whose sum is σ = 212861880. Its totient is φ = 60716112.

The previous prime is 121533767. The next prime is 121533791. The reversal of 121533788 is 887335121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 7031 + ... + 17102.

It is an arithmetic number, because the mean of its divisors is an integer number (17738490).

Almost surely, 2^121533788 is an apocalyptic number.

It is an amenable number.

121533788 is a deficient number, since it is larger than the sum of its proper divisors (91328092).

121533788 is a wasteful number, since it uses less digits than its factorization.

121533788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25396 (or 25394 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The square root of 121533788 is about 11024.2363907892. The cubic root of 121533788 is about 495.3349948147.

The spelling of 121533788 in words is "one hundred twenty-one million, five hundred thirty-three thousand, seven hundred eighty-eight".