221312402342223 has 8 divisors (see below), whose sum is σ = 296581087403568. Its totient is φ = 146792659421184.

The previous prime is 221312402342209. The next prime is 221312402342237. The reversal of 221312402342223 is 322243204213122.

It is an interprime number because it is at equal distance from previous prime (221312402342209) and next prime (221312402342237).

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

It is not a de Polignac number, because 221312402342223 - 2¹³ = 221312402334031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221312402362223) 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 in 7 ways as a sum of consecutive naturals, for example, 187235534386 + ... + 187235535567.

It is an arithmetic number, because the mean of its divisors is an integer number (37072635925446).

Almost surely, 2^{221312402342223} is an apocalyptic number.

221312402342223 is a deficient number, since it is larger than the sum of its proper divisors (75268685061345).

221312402342223 is a wasteful number, since it uses less digits than its factorization.

221312402342223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374471070153.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 221312402342223 its reverse (322243204213122), we get a palindrome (543555606555345).

The spelling of 221312402342223 in words is "two hundred twenty-one trillion, three hundred twelve billion, four hundred two million, three hundred forty-two thousand, two hundred twenty-three".