21323320202011 has 2 divisors, whose sum is σ = 21323320202012. Its totient is φ = 21323320202010.

The previous prime is 21323320201991. The next prime is 21323320202021. The reversal of 21323320202011 is 11020202332312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21323320202011 - 2⁹ = 21323320201499 is a prime.

It is not a weakly prime, because it can be changed into another prime (21323320202021) 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 as a sum of consecutive naturals, namely, 10661660101005 + 10661660101006.

It is an arithmetic number, because the mean of its divisors is an integer number (10661660101006).

Almost surely, 2^{21323320202011} is an apocalyptic number.

21323320202011 is a deficient number, since it is larger than the sum of its proper divisors (1).

21323320202011 is an equidigital number, since it uses as much as digits as its factorization.

21323320202011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21323320202011 its reverse (11020202332312), we get a palindrome (32343522534323).

The spelling of 21323320202011 in words is "twenty-one trillion, three hundred twenty-three billion, three hundred twenty million, two hundred two thousand, eleven".