204220131010020 has 72 divisors (see below), whose sum is σ = 620005930951680. Its totient is φ = 54411387297600.

The previous prime is 204220131010019. The next prime is 204220131010039. The reversal of 204220131010020 is 20010131022402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 204220131009975 and 204220131010002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 492649590 + ... + 493063949.

It is an arithmetic number, because the mean of its divisors is an integer number (8611193485440).

Almost surely, 2^{204220131010020} is an apocalyptic number.

204220131010020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204220131010020 is an abundant number, since it is smaller than the sum of its proper divisors (415785799941660).

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

204220131010020 is a wasteful number, since it uses less digits than its factorization.

204220131010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985714705 (or 985714700 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 204220131010020 its reverse (20010131022402), we get a palindrome (224230262032422).

The spelling of 204220131010020 in words is "two hundred four trillion, two hundred twenty billion, one hundred thirty-one million, ten thousand, twenty".