204616121 has 4 divisors (see below), whose sum is σ = 204652032. Its totient is φ = 204580212.

The previous prime is 204616067. The next prime is 204616123. The reversal of 204616121 is 121616402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204616121 - 2²⁶ = 137507257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204616123) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7301 + ... + 21506.

It is an arithmetic number, because the mean of its divisors is an integer number (51163008).

Almost surely, 2^204616121 is an apocalyptic number.

It is an amenable number.

204616121 is a deficient number, since it is larger than the sum of its proper divisors (35911).

204616121 is an equidigital number, since it uses as much as digits as its factorization.

204616121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35910.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 204616121 is about 14304.4091454348. The cubic root of 204616121 is about 589.2685765357.

The spelling of 204616121 in words is "two hundred four million, six hundred sixteen thousand, one hundred twenty-one".