121505275 has 12 divisors (see below), whose sum is σ = 155527744. Its totient is φ = 94068000.

The previous prime is 121505269. The next prime is 121505287. The reversal of 121505275 is 572505121.

It is not a de Polignac number, because 121505275 - 2⁷ = 121505147 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 77616 + ... + 79165.

Almost surely, 2^121505275 is an apocalyptic number.

121505275 is a deficient number, since it is larger than the sum of its proper divisors (34022469).

121505275 is a wasteful number, since it uses less digits than its factorization.

121505275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156822 (or 156817 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 121505275 is about 11022.9431187864. The cubic root of 121505275 is about 495.2962549943.

The spelling of 121505275 in words is "one hundred twenty-one million, five hundred five thousand, two hundred seventy-five".