2100201003 has 12 divisors (see below), whose sum is σ = 3063077680. Its totient is φ = 1386539856.

The previous prime is 2100200987. The next prime is 2100201011. The reversal of 2100201003 is 3001020012.

It is a happy number.

It is not a de Polignac number, because 2100201003 - 2⁴ = 2100200987 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100201013) by changing a digit.

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, 1131868 + ... + 1133721.

Almost surely, 2^2100201003 is an apocalyptic number.

2100201003 is a deficient number, since it is larger than the sum of its proper divisors (962876677).

2100201003 is a wasteful number, since it uses less digits than its factorization.

2100201003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265698 (or 2265695 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 2100201003 is about 45827.9500196114. The cubic root of 2100201003 is about 1280.6200208672.

Adding to 2100201003 its reverse (3001020012), we get a palindrome (5101221015).

The spelling of 2100201003 in words is "two billion, one hundred million, two hundred one thousand, three".