21323331000133 has 2 divisors, whose sum is σ = 21323331000134. Its totient is φ = 21323331000132.

The previous prime is 21323331000121. The next prime is 21323331000151. The reversal of 21323331000133 is 33100013332312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19828291692609 + 1495039307524 = 4452897^2 + 1222718^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21323331000133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21323331000098 and 21323331000107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21323331000163) 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, 10661665500066 + 10661665500067.

It is an arithmetic number, because the mean of its divisors is an integer number (10661665500067).

Almost surely, 2^{21323331000133} is an apocalyptic number.

It is an amenable number.

21323331000133 is a deficient number, since it is larger than the sum of its proper divisors (1).

21323331000133 is an equidigital number, since it uses as much as digits as its factorization.

21323331000133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 21323331000133 its reverse (33100013332312), we get a palindrome (54423344332445).

The spelling of 21323331000133 in words is "twenty-one trillion, three hundred twenty-three billion, three hundred thirty-one million, one hundred thirty-three", and thus it is an aban number.