121305152 has 28 divisors (see below), whose sum is σ = 241133376. Its totient is φ = 60547200.

The previous prime is 121305127. The next prime is 121305157. The reversal of 121305152 is 251503121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121305157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46277 + ... + 48827.

Almost surely, 2^121305152 is an apocalyptic number.

It is an amenable number.

121305152 is a deficient number, since it is larger than the sum of its proper divisors (119828224).

121305152 is an equidigital number, since it uses as much as digits as its factorization.

121305152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3306 (or 3296 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 121305152 is about 11013.8618113721. The cubic root of 121305152 is about 495.0241827454.

Adding to 121305152 its reverse (251503121), we get a palindrome (372808273).

The spelling of 121305152 in words is "one hundred twenty-one million, three hundred five thousand, one hundred fifty-two".