221312302223 has 8 divisors (see below), whose sum is σ = 235557538560. Its totient is φ = 207203384320.

The previous prime is 221312302199. The next prime is 221312302243. The reversal of 221312302223 is 322203213122.

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

It is a cyclic number.

It is not a de Polignac number, because 221312302223 - 2¹² = 221312298127 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 (221312302243) 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, 34076258 + ... + 34082751.

It is an arithmetic number, because the mean of its divisors is an integer number (29444692320).

Almost surely, 2^221312302223 is an apocalyptic number.

221312302223 is a deficient number, since it is larger than the sum of its proper divisors (14245236337).

221312302223 is a wasteful number, since it uses less digits than its factorization.

221312302223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68159217.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 221312302223 its reverse (322203213122), we get a palindrome (543515515345).

The spelling of 221312302223 in words is "two hundred twenty-one billion, three hundred twelve million, three hundred two thousand, two hundred twenty-three".