221310213312322 has 8 divisors (see below), whose sum is σ = 331974538006716. Its totient is φ = 110652033976752.

The previous prime is 221310213312311. The next prime is 221310213312323. The reversal of 221310213312322 is 223213312013122.

It can be written as a sum of positive squares in 2 ways, for example, as 218237067576801 + 3073145735521 = 14772849^2 + 1753039^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (221310213312323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1536249673 + ... + 1536393724.

Almost surely, 2^{221310213312322} is an apocalyptic number.

221310213312322 is a deficient number, since it is larger than the sum of its proper divisors (110664324694394).

221310213312322 is a wasteful number, since it uses less digits than its factorization.

221310213312322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3072679412.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 221310213312322 its reverse (223213312013122), we get a palindrome (444523525325444).

The spelling of 221310213312322 in words is "two hundred twenty-one trillion, three hundred ten billion, two hundred thirteen million, three hundred twelve thousand, three hundred twenty-two".