222352321 has 4 divisors (see below), whose sum is σ = 222573700. Its totient is φ = 222130944.

The previous prime is 222352289. The next prime is 222352327. The reversal of 222352321 is 123253222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66601921 + 155750400 = 8161^2 + 12480^2 .

It is a cyclic number.

It is not a de Polignac number, because 222352321 - 2⁵ = 222352289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222352292 and 222352301.

It is not an unprimeable number, because it can be changed into a prime (222352327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109176 + ... + 111193.

It is an arithmetic number, because the mean of its divisors is an integer number (55643425).

Almost surely, 2^222352321 is an apocalyptic number.

It is an amenable number.

222352321 is a deficient number, since it is larger than the sum of its proper divisors (221379).

222352321 is a wasteful number, since it uses less digits than its factorization.

222352321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221378.

The product of its digits is 1440, while the sum is 22.

The square root of 222352321 is about 14911.4828571809. The cubic root of 222352321 is about 605.8250438020.

Subtracting from 222352321 its reverse (123253222), we obtain a palindrome (99099099).

The spelling of 222352321 in words is "two hundred twenty-two million, three hundred fifty-two thousand, three hundred twenty-one".