2020021002 has 24 divisors (see below), whose sum is σ = 4390531236. Its totient is φ = 671214336.

The previous prime is 2020020991. The next prime is 2020021009. The reversal of 2020021002 is 2001200202.

It can be written as a sum of positive squares in 2 ways, for example, as 1846334961 + 173686041 = 42969^2 + 13179^2 .

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 (2020021009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171303 + ... + 182714.

Almost surely, 2^2020021002 is an apocalyptic number.

2020021002 is an abundant number, since it is smaller than the sum of its proper divisors (2370510234).

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

2020021002 is a wasteful number, since it uses less digits than its factorization.

2020021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354342 (or 354339 counting only the distinct ones).

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

The square root of 2020021002 is about 44944.6437520646. The cubic root of 2020021002 is about 1264.1112458336. Note that the first 3 decimals are identical.

Adding to 2020021002 its reverse (2001200202), we get a palindrome (4021221204).

The spelling of 2020021002 in words is "two billion, twenty million, twenty-one thousand, two".