22215512330321 has 2 divisors, whose sum is σ = 22215512330322. Its totient is φ = 22215512330320.

The previous prime is 22215512330267. The next prime is 22215512330357. The reversal of 22215512330321 is 12303321551222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22141127950096 + 74384380225 = 4705436^2 + 272735^2 .

It is a cyclic number.

It is not a de Polignac number, because 22215512330321 - 2⁶ = 22215512330257 is a prime.

It is not a weakly prime, because it can be changed into another prime (22215512330621) 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, 11107756165160 + 11107756165161.

It is an arithmetic number, because the mean of its divisors is an integer number (11107756165161).

Almost surely, 2^{22215512330321} is an apocalyptic number.

It is an amenable number.

22215512330321 is a deficient number, since it is larger than the sum of its proper divisors (1).

22215512330321 is an equidigital number, since it uses as much as digits as its factorization.

22215512330321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 22215512330321 its reverse (12303321551222), we get a palindrome (34518833881543).

The spelling of 22215512330321 in words is "twenty-two trillion, two hundred fifteen billion, five hundred twelve million, three hundred thirty thousand, three hundred twenty-one".