21330220220033 has 2 divisors, whose sum is σ = 21330220220034. Its totient is φ = 21330220220032.

The previous prime is 21330220219993. The next prime is 21330220220051. The reversal of 21330220220033 is 33002202203312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11958711510769 + 9371508709264 = 3458137^2 + 3061292^2 .

It is a cyclic number.

It is not a de Polignac number, because 21330220220033 - 2¹² = 21330220215937 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21330220219990 and 21330220220008.

It is not a weakly prime, because it can be changed into another prime (21330220226033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10665110110016 + 10665110110017.

It is an arithmetic number, because the mean of its divisors is an integer number (10665110110017).

Almost surely, 2^{21330220220033} is an apocalyptic number.

It is an amenable number.

21330220220033 is a deficient number, since it is larger than the sum of its proper divisors (1).

21330220220033 is an equidigital number, since it uses as much as digits as its factorization.

21330220220033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 21330220220033 its reverse (33002202203312), we get a palindrome (54332422423345).

The spelling of 21330220220033 in words is "twenty-one trillion, three hundred thirty billion, two hundred twenty million, two hundred twenty thousand, thirty-three".