21323332133333 has 2 divisors, whose sum is σ = 21323332133334. Its totient is φ = 21323332133332.

The previous prime is 21323332133309. The next prime is 21323332133377. The reversal of 21323332133333 is 33333123332312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21312099949009 + 11232184324 = 4616503^2 + 105982^2 .

It is a cyclic number.

It is not a de Polignac number, because 21323332133333 - 2¹⁸ = 21323331871189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21323332133293 and 21323332133302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21323332133303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10661666066666 + 10661666066667.

It is an arithmetic number, because the mean of its divisors is an integer number (10661666066667).

Almost surely, 2^{21323332133333} is an apocalyptic number.

It is an amenable number.

21323332133333 is a deficient number, since it is larger than the sum of its proper divisors (1).

21323332133333 is an equidigital number, since it uses as much as digits as its factorization.

21323332133333 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157464, while the sum is 35.

Adding to 21323332133333 its reverse (33333123332312), we get a palindrome (54656455465645).

The spelling of 21323332133333 in words is "twenty-one trillion, three hundred twenty-three billion, three hundred thirty-two million, one hundred thirty-three thousand, three hundred thirty-three".