21110333303311 has 12 divisors (see below), whose sum is σ = 24557005930080. Its totient is φ = 18094506857280.

The previous prime is 21110333303287. The next prime is 21110333303317. The reversal of 21110333303311 is 11330333301112.

It is a de Polignac number, because none of the positive numbers 2^k-21110333303311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110333303317) 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, 17491210 + ... + 18659128.

It is an arithmetic number, because the mean of its divisors is an integer number (2046417160840).

Almost surely, 2^{21110333303311} is an apocalyptic number.

21110333303311 is a deficient number, since it is larger than the sum of its proper divisors (3446672626769).

21110333303311 is a wasteful number, since it uses less digits than its factorization.

21110333303311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536814 (or 1536807 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 25.

Adding to 21110333303311 its reverse (11330333301112), we get a palindrome (32440666604423).

The spelling of 21110333303311 in words is "twenty-one trillion, one hundred ten billion, three hundred thirty-three million, three hundred three thousand, three hundred eleven".