121512065 has 8 divisors (see below), whose sum is σ = 145905408. Its totient is φ = 97149040.

The previous prime is 121512047. The next prime is 121512091. The reversal of 121512065 is 560215121.

It is a happy number.

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

It is not a de Polignac number, because 121512065 - 2⁸ = 121511809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121512065.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2450 + ... + 15780.

It is an arithmetic number, because the mean of its divisors is an integer number (18238176).

Almost surely, 2^121512065 is an apocalyptic number.

It is an amenable number.

121512065 is a deficient number, since it is larger than the sum of its proper divisors (24393343).

121512065 is a wasteful number, since it uses less digits than its factorization.

121512065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15159.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 121512065 is about 11023.2511084525. The cubic root of 121512065 is about 495.3054809283.

Adding to 121512065 its reverse (560215121), we get a palindrome (681727186).

The spelling of 121512065 in words is "one hundred twenty-one million, five hundred twelve thousand, sixty-five".