204047271021 has 16 divisors (see below), whose sum is σ = 297950891328. Its totient is φ = 123183820800.

The previous prime is 204047270993. The next prime is 204047271089. The reversal of 204047271021 is 120172740402.

It is not a de Polignac number, because 204047271021 - 2⁵ = 204047270989 is a prime.

It is a super-2 number, since 2×204047271021² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 204047271021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204047271721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12021190 + ... + 12038151.

It is an arithmetic number, because the mean of its divisors is an integer number (18621930708).

Almost surely, 2^204047271021 is an apocalyptic number.

It is an amenable number.

204047271021 is a deficient number, since it is larger than the sum of its proper divisors (93903620307).

204047271021 is a wasteful number, since it uses less digits than its factorization.

204047271021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24059612.

The product of its (nonzero) digits is 6272, while the sum is 30.

The spelling of 204047271021 in words is "two hundred four billion, forty-seven million, two hundred seventy-one thousand, twenty-one".