21033210003 has 16 divisors (see below), whose sum is σ = 30206658720. Its totient is φ = 12941316864.

The previous prime is 21033210001. The next prime is 21033210073. The reversal of 21033210003 is 30001233012.

It is not a de Polignac number, because 21033210003 - 2¹ = 21033210001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21033210001) 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 15 ways as a sum of consecutive naturals, for example, 204225 + ... + 289437.

It is an arithmetic number, because the mean of its divisors is an integer number (1887916170).

Almost surely, 2^21033210003 is an apocalyptic number.

21033210003 is a deficient number, since it is larger than the sum of its proper divisors (9173448717).

21033210003 is a wasteful number, since it uses less digits than its factorization.

21033210003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91558.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21033210003 its reverse (30001233012), we get a palindrome (51034443015).

The spelling of 21033210003 in words is "twenty-one billion, thirty-three million, two hundred ten thousand, three".