21312110211003 has 12 divisors (see below), whose sum is σ = 30801720060280. Its totient is φ = 14199968458656.

The previous prime is 21312110210983. The next prime is 21312110211013. The reversal of 21312110211003 is 30011201121312.

It is not a de Polignac number, because 21312110211003 - 2³⁰ = 21311036469179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21312110211013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 675401293 + ... + 675432846.

Almost surely, 2^{21312110211003} is an apocalyptic number.

21312110211003 is a deficient number, since it is larger than the sum of its proper divisors (9489609849277).

21312110211003 is a wasteful number, since it uses less digits than its factorization.

21312110211003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350835898 (or 1350835895 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 21312110211003 its reverse (30011201121312), we get a palindrome (51323311332315).

The spelling of 21312110211003 in words is "twenty-one trillion, three hundred twelve billion, one hundred ten million, two hundred eleven thousand, three".