121275985 has 8 divisors (see below), whose sum is σ = 145651176. Its totient is φ = 96940800.

The previous prime is 121275967. The next prime is 121275997. The reversal of 121275985 is 589572121.

It can be written as a sum of positive squares in 4 ways, for example, as 28654609 + 92621376 = 5353^2 + 9624^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121275985 - 2¹³ = 121267793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2866 + ... + 15835.

It is an arithmetic number, because the mean of its divisors is an integer number (18206397).

Almost surely, 2^121275985 is an apocalyptic number.

It is an amenable number.

121275985 is a deficient number, since it is larger than the sum of its proper divisors (24375191).

121275985 is a wasteful number, since it uses less digits than its factorization.

121275985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20003.

The product of its digits is 50400, while the sum is 40.

The square root of 121275985 is about 11012.5376276315. The cubic root of 121275985 is about 494.9845044974.

The spelling of 121275985 in words is "one hundred twenty-one million, two hundred seventy-five thousand, nine hundred eighty-five".