223001321 has 4 divisors (see below), whose sum is σ = 230194944. Its totient is φ = 215807700.

The previous prime is 223001267. The next prime is 223001333. The reversal of 223001321 is 123100322.

It is a happy number.

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: 123100322 = 2 ⋅61550161.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223001321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223001296 and 223001305.

It is not an unprimeable number, because it can be changed into a prime (223001341) 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, 3596765 + ... + 3596826.

It is an arithmetic number, because the mean of its divisors is an integer number (57548736).

Almost surely, 2^223001321 is an apocalyptic number.

It is an amenable number.

223001321 is a deficient number, since it is larger than the sum of its proper divisors (7193623).

223001321 is an equidigital number, since it uses as much as digits as its factorization.

223001321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7193622.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 223001321 is about 14933.2287533540. The cubic root of 223001321 is about 606.4138968641.

Adding to 223001321 its reverse (123100322), we get a palindrome (346101643).

Subtracting from 223001321 its reverse (123100322), we obtain a palindrome (99900999).

It can be divided in two parts, 223001 and 321, that added together give a palindrome (223322).

The spelling of 223001321 in words is "two hundred twenty-three million, one thousand, three hundred twenty-one".