2223523325521 has 2 divisors, whose sum is σ = 2223523325522. Its totient is φ = 2223523325520.

The previous prime is 2223523325519. The next prime is 2223523325533. The reversal of 2223523325521 is 1255233253222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2217600483921 + 5922841600 = 1489161^2 + 76960^2 .

It is a cyclic number.

It is not a de Polignac number, because 2223523325521 - 2¹ = 2223523325519 is a prime.

Together with 2223523325519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2223523325021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111761662760 + 1111761662761.

It is an arithmetic number, because the mean of its divisors is an integer number (1111761662761).

Almost surely, 2^{2223523325521} is an apocalyptic number.

It is an amenable number.

2223523325521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2223523325521 is an equidigital number, since it uses as much as digits as its factorization.

2223523325521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216000, while the sum is 37.

Adding to 2223523325521 its reverse (1255233253222), we get a palindrome (3478756578743).

The spelling of 2223523325521 in words is "two trillion, two hundred twenty-three billion, five hundred twenty-three million, three hundred twenty-five thousand, five hundred twenty-one".