204711010821 has 12 divisors (see below), whose sum is σ = 298021980672. Its totient is φ = 135399407976.

The previous prime is 204711010811. The next prime is 204711010837. The reversal of 204711010821 is 128010117402.

It is not a de Polignac number, because 204711010821 - 2⁵ = 204711010789 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204711010811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89548731 + ... + 89551016.

It is an arithmetic number, because the mean of its divisors is an integer number (24835165056).

Almost surely, 2^204711010821 is an apocalyptic number.

It is an amenable number.

204711010821 is a deficient number, since it is larger than the sum of its proper divisors (93310969851).

204711010821 is a wasteful number, since it uses less digits than its factorization.

204711010821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179099880 (or 179099877 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The spelling of 204711010821 in words is "two hundred four billion, seven hundred eleven million, ten thousand, eight hundred twenty-one".