21323133312011 has 2 divisors, whose sum is σ = 21323133312012. Its totient is φ = 21323133312010.

The previous prime is 21323133311989. The next prime is 21323133312029. The reversal of 21323133312011 is 11021333132312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21323133312011 - 2²² = 21323129117707 is a prime.

It is not a weakly prime, because it can be changed into another prime (21323133312211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10661566656005 + 10661566656006.

It is an arithmetic number, because the mean of its divisors is an integer number (10661566656006).

Almost surely, 2^{21323133312011} is an apocalyptic number.

21323133312011 is a deficient number, since it is larger than the sum of its proper divisors (1).

21323133312011 is an equidigital number, since it uses as much as digits as its factorization.

21323133312011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 21323133312011 its reverse (11021333132312), we get a palindrome (32344466444323).

The spelling of 21323133312011 in words is "twenty-one trillion, three hundred twenty-three billion, one hundred thirty-three million, three hundred twelve thousand, eleven".