21010003022003 has 32 divisors (see below), whose sum is σ = 23336185367040. Its totient is φ = 18825625082880.

The previous prime is 21010003021949. The next prime is 21010003022009. The reversal of 21010003022003 is 30022030001012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21010003022003 - 2¹⁴ = 21010003005619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21010003022009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47126648 + ... + 47570378.

It is an arithmetic number, because the mean of its divisors is an integer number (729255792720).

Almost surely, 2^{21010003022003} is an apocalyptic number.

21010003022003 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21010003022003 is a deficient number, since it is larger than the sum of its proper divisors (2326182345037).

21010003022003 is a wasteful number, since it uses less digits than its factorization.

21010003022003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444987.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21010003022003 its reverse (30022030001012), we get a palindrome (51032033023015).

The spelling of 21010003022003 in words is "twenty-one trillion, ten billion, three million, twenty-two thousand, three".