121808768 has 32 divisors (see below), whose sum is σ = 243420960. Its totient is φ = 60715008.

The previous prime is 121808767. The next prime is 121808779. The reversal of 121808768 is 867808121.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121808767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45680 + ... + 48272.

It is an arithmetic number, because the mean of its divisors is an integer number (7606905).

Almost surely, 2^121808768 is an apocalyptic number.

It is an amenable number.

121808768 is a deficient number, since it is larger than the sum of its proper divisors (121612192).

121808768 is an equidigital number, since it uses as much as digits as its factorization.

121808768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2974 (or 2962 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 41.

The square root of 121808768 is about 11036.7009563547. The cubic root of 121808768 is about 495.7082918801.

The spelling of 121808768 in words is "one hundred twenty-one million, eight hundred eight thousand, seven hundred sixty-eight".