223211230321 has 4 divisors (see below), whose sum is σ = 223499990772. Its totient is φ = 222922469872.

The previous prime is 223211230303. The next prime is 223211230327. The reversal of 223211230321 is 123032112322.

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 30521837025 + 192689393296 = 174705^2 + 438964^2 .

It is a cyclic number.

It is not a de Polignac number, because 223211230321 - 2⁹ = 223211229809 is a prime.

It is a super-3 number, since 3×223211230321³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223211230292 and 223211230301.

It is not an unprimeable number, because it can be changed into a prime (223211230327) 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, 144379066 + ... + 144380611.

It is an arithmetic number, because the mean of its divisors is an integer number (55874997693).

Almost surely, 2^223211230321 is an apocalyptic number.

It is an amenable number.

223211230321 is a deficient number, since it is larger than the sum of its proper divisors (288760451).

223211230321 is an equidigital number, since it uses as much as digits as its factorization.

223211230321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288760450.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 223211230321 its reverse (123032112322), we get a palindrome (346243342643).

The spelling of 223211230321 in words is "two hundred twenty-three billion, two hundred eleven million, two hundred thirty thousand, three hundred twenty-one".