121312075 has 24 divisors (see below), whose sum is σ = 156798000. Its totient is φ = 92991360.

The previous prime is 121312069. The next prime is 121312109. The reversal of 121312075 is 570213121.

It is a happy number.

It is not a de Polignac number, because 121312075 - 2⁵ = 121312043 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107464 + ... + 108586.

It is an arithmetic number, because the mean of its divisors is an integer number (6533250).

Almost surely, 2^121312075 is an apocalyptic number.

121312075 is a deficient number, since it is larger than the sum of its proper divisors (35485925).

121312075 is a wasteful number, since it uses less digits than its factorization.

121312075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311 (or 1306 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 121312075 is about 11014.1760926544. The cubic root of 121312075 is about 495.0335997327.

Adding to 121312075 its reverse (570213121), we get a palindrome (691525196).

The spelling of 121312075 in words is "one hundred twenty-one million, three hundred twelve thousand, seventy-five".