21003203320311 has 48 divisors (see below), whose sum is σ = 29407983903200. Its totient is φ = 13332538137600.

The previous prime is 21003203320303. The next prime is 21003203320349. The reversal of 21003203320311 is 11302330230012.

It is not a de Polignac number, because 21003203320311 - 2³ = 21003203320303 is a prime.

It is a super-2 number, since 2×21003203320311² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21003203320381) 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 47 ways as a sum of consecutive naturals, for example, 332840115 + ... + 332903211.

Almost surely, 2^{21003203320311} is an apocalyptic number.

21003203320311 is a deficient number, since it is larger than the sum of its proper divisors (8404780582889).

21003203320311 is a wasteful number, since it uses less digits than its factorization.

21003203320311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64096 (or 64073 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21003203320311 its reverse (11302330230012), we get a palindrome (32305533550323).

The spelling of 21003203320311 in words is "twenty-one trillion, three billion, two hundred three million, three hundred twenty thousand, three hundred eleven".