121689275 has 12 divisors (see below), whose sum is σ = 151032000. Its totient is φ = 97262880.

The previous prime is 121689259. The next prime is 121689277. The reversal of 121689275 is 572986121.

It is not a de Polignac number, because 121689275 - 2⁴ = 121689259 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (121689277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49526 + ... + 51924.

It is an arithmetic number, because the mean of its divisors is an integer number (12586000).

Almost surely, 2^121689275 is an apocalyptic number.

121689275 is a deficient number, since it is larger than the sum of its proper divisors (29342725).

121689275 is a wasteful number, since it uses less digits than its factorization.

121689275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4438 (or 4433 counting only the distinct ones).

The product of its digits is 60480, while the sum is 41.

The square root of 121689275 is about 11031.2861897423. The cubic root of 121689275 is about 495.5461441364.

The spelling of 121689275 in words is "one hundred twenty-one million, six hundred eighty-nine thousand, two hundred seventy-five".