21311333000011 has 2 divisors, whose sum is σ = 21311333000012. Its totient is φ = 21311333000010.

The previous prime is 21311332999991. The next prime is 21311333000039. The reversal of 21311333000011 is 11000033311312.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21311333000011 is a prime.

It is not a weakly prime, because it can be changed into another prime (21311333060011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10655666500005 + 10655666500006.

It is an arithmetic number, because the mean of its divisors is an integer number (10655666500006).

Almost surely, 2^{21311333000011} is an apocalyptic number.

21311333000011 is a deficient number, since it is larger than the sum of its proper divisors (1).

21311333000011 is an equidigital number, since it uses as much as digits as its factorization.

21311333000011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 21311333000011 its reverse (11000033311312), we get a palindrome (32311366311323).

The spelling of 21311333000011 in words is "twenty-one trillion, three hundred eleven billion, three hundred thirty-three million, eleven", and thus it is an aban number.