21010330330311 has 96 divisors (see below), whose sum is σ = 34744964889600. Its totient is φ = 11267194114176.

The previous prime is 21010330330303. The next prime is 21010330330343. The reversal of 21010330330311 is 11303303301012.

It is not a de Polignac number, because 21010330330311 - 2³ = 21010330330303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010330330711) 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 95 ways as a sum of consecutive naturals, for example, 66322585 + ... + 66638621.

It is an arithmetic number, because the mean of its divisors is an integer number (361926717600).

Almost surely, 2^{21010330330311} is an apocalyptic number.

21010330330311 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21010330330311 is a deficient number, since it is larger than the sum of its proper divisors (13734634559289).

21010330330311 is an equidigital number, since it uses as much as digits as its factorization.

21010330330311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316190 (or 316123 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 21010330330311 its reverse (11303303301012), we get a palindrome (32313633631323).

The spelling of 21010330330311 in words is "twenty-one trillion, ten billion, three hundred thirty million, three hundred thirty thousand, three hundred eleven".