2001023020 has 12 divisors (see below), whose sum is σ = 4202148384. Its totient is φ = 800409200.

The previous prime is 2001022993. The next prime is 2001023027. The reversal of 2001023020 is 203201002.

2001023020 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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 = 2001022988 and 2001023006.

It is not an unprimeable number, because it can be changed into a prime (2001023027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50025556 + ... + 50025595.

It is an arithmetic number, because the mean of its divisors is an integer number (350179032).

Almost surely, 2^2001023020 is an apocalyptic number.

2001023020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001023020 is an abundant number, since it is smaller than the sum of its proper divisors (2201125364).

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

2001023020 is a wasteful number, since it uses less digits than its factorization.

2001023020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100051160 (or 100051158 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 2001023020 is about 44732.7957990555. The cubic root of 2001023020 is about 1260.1358340164.

Adding to 2001023020 its reverse (203201002), we get a palindrome (2204224022).

The spelling of 2001023020 in words is "two billion, one million, twenty-three thousand, twenty".