223311221321 has 4 divisors (see below), whose sum is σ = 224809954500. Its totient is φ = 221812488144.

The previous prime is 223311221293. The next prime is 223311221333. The reversal of 223311221321 is 123122113322.

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 122895118096 + 100416103225 = 350564^2 + 316885^2 .

It is a cyclic number.

It is not a de Polignac number, because 223311221321 - 2¹⁸ = 223310959177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223311421321) 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, 749366366 + ... + 749366663.

It is an arithmetic number, because the mean of its divisors is an integer number (56202488625).

Almost surely, 2^223311221321 is an apocalyptic number.

It is an amenable number.

223311221321 is a deficient number, since it is larger than the sum of its proper divisors (1498733179).

223311221321 is a wasteful number, since it uses less digits than its factorization.

223311221321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498733178.

The product of its digits is 864, while the sum is 23.

Adding to 223311221321 its reverse (123122113322), we get a palindrome (346433334643).

The spelling of 223311221321 in words is "two hundred twenty-three billion, three hundred eleven million, two hundred twenty-one thousand, three hundred twenty-one".