2021000203 has 8 divisors (see below), whose sum is σ = 2043847440. Its totient is φ = 1998208800.

The previous prime is 2021000147. The next prime is 2021000251. The reversal of 2021000203 is 3020001202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021000203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021000203.

It is not an unprimeable number, because it can be changed into a prime (2021000503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61101 + ... + 88177.

It is an arithmetic number, because the mean of its divisors is an integer number (255480930).

Almost surely, 2^2021000203 is an apocalyptic number.

2021000203 is a deficient number, since it is larger than the sum of its proper divisors (22847237).

2021000203 is a wasteful number, since it uses less digits than its factorization.

2021000203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27917.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 2021000203 is about 44955.5358437646. The cubic root of 2021000203 is about 1264.3154712746.

Adding to 2021000203 its reverse (3020001202), we get a palindrome (5041001405).

Subtracting 2021000203 from its reverse (3020001202), we obtain a palindrome (999000999).

It can be divided in two parts, 202 and 1000203, that added together give a triangular number (1000405 = T₁₄₁₄).

The spelling of 2021000203 in words is "two billion, twenty-one million, two hundred three", and thus it is an aban number.