20210021000203 has 24 divisors (see below), whose sum is σ = 20674279488240. Its totient is φ = 19755726144000.

The previous prime is 20210021000161. The next prime is 20210021000209. The reversal of 20210021000203 is 30200012001202.

It is a de Polignac number, because none of the positive numbers 2^k-20210021000203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20210021000209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 539073283 + ... + 539110771.

It is an arithmetic number, because the mean of its divisors is an integer number (861428312010).

Almost surely, 2^{20210021000203} is an apocalyptic number.

20210021000203 is a deficient number, since it is larger than the sum of its proper divisors (464258488037).

20210021000203 is an equidigital number, since it uses as much as digits as its factorization.

20210021000203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38475 (or 38416 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20210021000203 its reverse (30200012001202), we get a palindrome (50410033001405).

The spelling of 20210021000203 in words is "twenty trillion, two hundred ten billion, twenty-one million, two hundred three", and thus it is an aban number.