2001104020 has 12 divisors (see below), whose sum is σ = 4202318484. Its totient is φ = 800441600.

The previous prime is 2001103981. The next prime is 2001104047. The reversal of 2001104020 is 204011002.

It can be written as a sum of positive squares in 2 ways, for example, as 1170050436 + 831053584 = 34206^2 + 28828^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 2001103988 and 2001104006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50027581 + ... + 50027620.

It is an arithmetic number, because the mean of its divisors is an integer number (350193207).

Almost surely, 2^2001104020 is an apocalyptic number.

2001104020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001104020 is an abundant number, since it is smaller than the sum of its proper divisors (2201214464).

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

2001104020 is a wasteful number, since it uses less digits than its factorization.

2001104020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100055210 (or 100055208 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2001104020 is about 44733.7011658995. The cubic root of 2001104020 is about 1260.1528369234.

Adding to 2001104020 its reverse (204011002), we get a palindrome (2205115022).

The spelling of 2001104020 in words is "two billion, one million, one hundred four thousand, twenty".