204021113020 has 48 divisors (see below), whose sum is σ = 433401792768. Its totient is φ = 80666841600.

The previous prime is 204021113011. The next prime is 204021113033. The reversal of 204021113020 is 20311120402.

It is a super-2 number, since 2×204021113020² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204021112985 and 204021113003.

It is a congruent number.

It is an unprimeable number.

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, 1142944 + ... + 1309336.

It is an arithmetic number, because the mean of its divisors is an integer number (9029204016).

Almost surely, 2^204021113020 is an apocalyptic number.

204021113020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204021113020 is an abundant number, since it is smaller than the sum of its proper divisors (229380679748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204021113020 is a wasteful number, since it uses less digits than its factorization.

204021113020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167110 (or 167108 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 204021113020 its reverse (20311120402), we get a palindrome (224332233422).

The spelling of 204021113020 in words is "two hundred four billion, twenty-one million, one hundred thirteen thousand, twenty".