2021100002 has 8 divisors (see below), whose sum is σ = 3105592812. Its totient is φ = 985902400.

The previous prime is 2021099989. The next prime is 2021100019. The reversal of 2021100002 is 2000011202.

It can be written as a sum of positive squares in 2 ways, for example, as 1882778881 + 138321121 = 43391^2 + 11761^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 12323699 + ... + 12323862.

Almost surely, 2^2021100002 is an apocalyptic number.

2021100002 is a deficient number, since it is larger than the sum of its proper divisors (1084492810).

2021100002 is a wasteful number, since it uses less digits than its factorization.

2021100002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24647604.

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

The square root of 2021100002 is about 44956.6458045971. The cubic root of 2021100002 is about 1264.3362819839.

Adding to 2021100002 its reverse (2000011202), we get a palindrome (4021111204).

The spelling of 2021100002 in words is "two billion, twenty-one million, one hundred thousand, two".