204121916 has 12 divisors (see below), whose sum is σ = 357583632. Its totient is φ = 101955168.

The previous prime is 204121913. The next prime is 204121919. The reversal of 204121916 is 619121402.

204121916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (204121913) and next prime (204121919).

It is a super-2 number, since 2×204121916² = 83331513183022112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204121913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22025 + ... + 29888.

It is an arithmetic number, because the mean of its divisors is an integer number (29798636).

Almost surely, 2^204121916 is an apocalyptic number.

It is an amenable number.

204121916 is a deficient number, since it is larger than the sum of its proper divisors (153461716).

204121916 is a wasteful number, since it uses less digits than its factorization.

204121916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52900 (or 52898 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 204121916 is about 14287.1241332887. The cubic root of 204121916 is about 588.7937780866.

The spelling of 204121916 in words is "two hundred four million, one hundred twenty-one thousand, nine hundred sixteen".