2021011002 has 24 divisors (see below), whose sum is σ = 4386740436. Its totient is φ = 672457536.

The previous prime is 2021010997. The next prime is 2021011033. The reversal of 2021011002 is 2001101202.

It can be written as a sum of positive squares in 2 ways, for example, as 1937672361 + 83338641 = 44019^2 + 9129^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90763 + ... + 110814.

Almost surely, 2^2021011002 is an apocalyptic number.

2021011002 is an abundant number, since it is smaller than the sum of its proper divisors (2365729434).

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

2021011002 is a wasteful number, since it uses less digits than its factorization.

2021011002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202142 (or 202139 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2021011002 is about 44955.6559511704. The cubic root of 2021011002 is about 1264.3177231824.

Adding to 2021011002 its reverse (2001101202), we get a palindrome (4022112204).

It can be divided in two parts, 202101 and 1002, that multiplied together give a palindrome (202505202).

The spelling of 2021011002 in words is "two billion, twenty-one million, eleven thousand, two".