21211310003 has 32 divisors (see below), whose sum is σ = 24487895040. Its totient is φ = 18210769920.

The previous prime is 21211309993. The next prime is 21211310027. The reversal of 21211310003 is 30001311212.

It is a cyclic number.

It is not a de Polignac number, because 21211310003 - 2¹⁸ = 21211047859 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 21211310003.

It is not an unprimeable number, because it can be changed into a prime (21211310063) 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 31 ways as a sum of consecutive naturals, for example, 3039308 + ... + 3046278.

It is an arithmetic number, because the mean of its divisors is an integer number (765246720).

Almost surely, 2^21211310003 is an apocalyptic number.

21211310003 is a deficient number, since it is larger than the sum of its proper divisors (3276585037).

21211310003 is a wasteful number, since it uses less digits than its factorization.

21211310003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7227.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21211310003 its reverse (30001311212), we get a palindrome (51212621215).

The spelling of 21211310003 in words is "twenty-one billion, two hundred eleven million, three hundred ten thousand, three".