222310321 has 4 divisors (see below), whose sum is σ = 223674352. Its totient is φ = 220946292.

The previous prime is 222310307. The next prime is 222310327. The reversal of 222310321 is 123013222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123013222 = 2 ⋅61506611.

It is a cyclic number.

It is not a de Polignac number, because 222310321 - 2²³ = 213921713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222310295 and 222310304.

It is not an unprimeable number, because it can be changed into a prime (222310327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 681771 + ... + 682096.

It is an arithmetic number, because the mean of its divisors is an integer number (55918588).

Almost surely, 2^222310321 is an apocalyptic number.

It is an amenable number.

222310321 is a deficient number, since it is larger than the sum of its proper divisors (1364031).

222310321 is a wasteful number, since it uses less digits than its factorization.

222310321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364030.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 222310321 is about 14910.0744800286. The cubic root of 222310321 is about 605.7868967538.

Adding to 222310321 its reverse (123013222), we get a palindrome (345323543).

It can be divided in two parts, 2223 and 10321, that added together give a square (12544 = 112²).

The spelling of 222310321 in words is "two hundred twenty-two million, three hundred ten thousand, three hundred twenty-one".