221323434422 has 8 divisors (see below), whose sum is σ = 332875193376. Its totient is φ = 110365036632.

The previous prime is 221323434389. The next prime is 221323434517. The reversal of 221323434422 is 224434323122.

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

It is a congruent number.

It is an unprimeable number.

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, 148339358 + ... + 148340849.

It is an arithmetic number, because the mean of its divisors is an integer number (41609399172).

Almost surely, 2^221323434422 is an apocalyptic number.

221323434422 is a deficient number, since it is larger than the sum of its proper divisors (111551758954).

221323434422 is a wasteful number, since it uses less digits than its factorization.

221323434422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296680582.

The product of its digits is 55296, while the sum is 32.

Adding to 221323434422 its reverse (224434323122), we get a palindrome (445757757544).

The spelling of 221323434422 in words is "two hundred twenty-one billion, three hundred twenty-three million, four hundred thirty-four thousand, four hundred twenty-two".