121204513 has 8 divisors (see below), whose sum is σ = 125259776. Its totient is φ = 117158400.

The previous prime is 121204483. The next prime is 121204547. The reversal of 121204513 is 315402121.

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

It is a cyclic number.

It is not a de Polignac number, because 121204513 - 2⁹ = 121204001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121204583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34048 + ... + 37438.

It is an arithmetic number, because the mean of its divisors is an integer number (15657472).

Almost surely, 2^121204513 is an apocalyptic number.

It is an amenable number.

121204513 is a deficient number, since it is larger than the sum of its proper divisors (4055263).

121204513 is a wasteful number, since it uses less digits than its factorization.

121204513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4575.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 121204513 is about 11009.2921207496. The cubic root of 121204513 is about 494.8872484070.

Adding to 121204513 its reverse (315402121), we get a palindrome (436606634).

The spelling of 121204513 in words is "one hundred twenty-one million, two hundred four thousand, five hundred thirteen".