2021020002 has 48 divisors (see below), whose sum is σ = 4409054208. Its totient is φ = 669049920.

The previous prime is 2021019997. The next prime is 2021020003. The reversal of 2021020002 is 2000201202.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (2021020003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2341423 + ... + 2342285.

It is an arithmetic number, because the mean of its divisors is an integer number (91855296).

Almost surely, 2^2021020002 is an apocalyptic number.

2021020002 is an abundant number, since it is smaller than the sum of its proper divisors (2388034206).

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

2021020002 is a wasteful number, since it uses less digits than its factorization.

2021020002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615 (or 1612 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 2021020002 is about 44955.7560496985. The cubic root of 2021020002 is about 1264.3195999399.

Adding to 2021020002 its reverse (2000201202), we get a palindrome (4021221204).

The spelling of 2021020002 in words is "two billion, twenty-one million, twenty thousand, two".