213221232223 has 8 divisors (see below), whose sum is σ = 224488400000. Its totient is φ = 201958564248.

The previous prime is 213221232199. The next prime is 213221232227. The reversal of 213221232223 is 322232122312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213221232223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213221232227) 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 7 ways as a sum of consecutive naturals, for example, 1027461 + ... + 1217422.

It is an arithmetic number, because the mean of its divisors is an integer number (28061050000).

Almost surely, 2^213221232223 is an apocalyptic number.

213221232223 is a deficient number, since it is larger than the sum of its proper divisors (11267167777).

213221232223 is a wasteful number, since it uses less digits than its factorization.

213221232223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2249901.

The product of its digits is 3456, while the sum is 25.

Adding to 213221232223 its reverse (322232122312), we get a palindrome (535453354535).

The spelling of 213221232223 in words is "two hundred thirteen billion, two hundred twenty-one million, two hundred thirty-two thousand, two hundred twenty-three".