204252024121 has 4 divisors (see below), whose sum is σ = 204259318144. Its totient is φ = 204244730100.

The previous prime is 204252024113. The next prime is 204252024131. The reversal of 204252024121 is 121420252402.

It is a happy number.

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 204252024121 - 2³ = 204252024113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204252024131) 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, 3604845 + ... + 3661066.

It is an arithmetic number, because the mean of its divisors is an integer number (51064829536).

Almost surely, 2^204252024121 is an apocalyptic number.

It is an amenable number.

204252024121 is a deficient number, since it is larger than the sum of its proper divisors (7294023).

204252024121 is an equidigital number, since it uses as much as digits as its factorization.

204252024121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7294022.

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 204252024121 its reverse (121420252402), we get a palindrome (325672276523).

The spelling of 204252024121 in words is "two hundred four billion, two hundred fifty-two million, twenty-four thousand, one hundred twenty-one".