21013303111011 has 8 divisors (see below), whose sum is σ = 31130819423760. Its totient is φ = 14008868740656.

The previous prime is 21013303110953. The next prime is 21013303111111. The reversal of 21013303111011 is 11011130331012.

21013303111011 is a `hidden beast` number, since 2 + 1 + 0 + 1 + 330 + 311 + 10 + 11 = 666.

It is not a de Polignac number, because 21013303111011 - 2²³ = 21013294722403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21013303111111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389135242770 + ... + 389135242823.

It is an arithmetic number, because the mean of its divisors is an integer number (3891352427970).

Almost surely, 2^{21013303111011} is an apocalyptic number.

21013303111011 is a deficient number, since it is larger than the sum of its proper divisors (10117516312749).

21013303111011 is an equidigital number, since it uses as much as digits as its factorization.

21013303111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778270485602 (or 778270485596 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 21013303111011 its reverse (11011130331012), we get a palindrome (32024433442023).

The spelling of 21013303111011 in words is "twenty-one trillion, thirteen billion, three hundred three million, one hundred eleven thousand, eleven".