21333444433297 has 2 divisors, whose sum is σ = 21333444433298. Its totient is φ = 21333444433296.

The previous prime is 21333444433193. The next prime is 21333444433319. The reversal of 21333444433297 is 79233444433312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18634770873601 + 2698673559696 = 4316801^2 + 1642764^2 .

It is a cyclic number.

It is not a de Polignac number, because 21333444433297 - 2³⁹ = 20783688619409 is a prime.

It is not a weakly prime, because it can be changed into another prime (21333444433597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666722216648 + 10666722216649.

It is an arithmetic number, because the mean of its divisors is an integer number (10666722216649).

Almost surely, 2^{21333444433297} is an apocalyptic number.

It is an amenable number.

21333444433297 is a deficient number, since it is larger than the sum of its proper divisors (1).

21333444433297 is an equidigital number, since it uses as much as digits as its factorization.

21333444433297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15676416, while the sum is 52.

The spelling of 21333444433297 in words is "twenty-one trillion, three hundred thirty-three billion, four hundred forty-four million, four hundred thirty-three thousand, two hundred ninety-seven".