121517275 has 54 divisors (see below), whose sum is σ = 177206540. Its totient is φ = 82579200.

The previous prime is 121517273. The next prime is 121517299. The reversal of 121517275 is 572715121.

It is not a de Polignac number, because 121517275 - 2¹ = 121517273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121517273) by changing a digit.

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 53 ways as a sum of consecutive naturals, for example, 874156 + ... + 874294.

Almost surely, 2^121517275 is an apocalyptic number.

121517275 is a deficient number, since it is larger than the sum of its proper divisors (55689265).

121517275 is a wasteful number, since it uses less digits than its factorization.

121517275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 172 counting only the distinct ones).

The product of its digits is 4900, while the sum is 31.

The square root of 121517275 is about 11023.4874245857. The cubic root of 121517275 is about 495.3125597992.

The spelling of 121517275 in words is "one hundred twenty-one million, five hundred seventeen thousand, two hundred seventy-five".