204033321231021 has 24 divisors (see below), whose sum is σ = 323608404921984. Its totient is φ = 128020907436480.

The previous prime is 204033321230969. The next prime is 204033321231037. The reversal of 204033321231021 is 120132123330402.

204033321231021 is a `hidden beast` number, since 2 + 0 + 4 + 0 + 3 + 3 + 321 + 2 + 310 + 21 = 666.

It is not a de Polignac number, because 204033321231021 - 2²⁶ = 204033254122157 is a prime.

It is a super-2 number, since 2×204033321231021² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204033321231821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24695386965 + ... + 24695395226.

It is an arithmetic number, because the mean of its divisors is an integer number (13483683538416).

Almost surely, 2^{204033321231021} is an apocalyptic number.

It is an amenable number.

204033321231021 is a deficient number, since it is larger than the sum of its proper divisors (119575083690963).

204033321231021 is an equidigital number, since it uses as much as digits as its factorization.

204033321231021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49390782223 (or 49390782211 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 204033321231021 its reverse (120132123330402), we get a palindrome (324165444561423).

The spelling of 204033321231021 in words is "two hundred four trillion, thirty-three billion, three hundred twenty-one million, two hundred thirty-one thousand, twenty-one".