223321012 has 12 divisors (see below), whose sum is σ = 398185956. Its totient is φ = 109553600.

The previous prime is 223321009. The next prime is 223321019. The reversal of 223321012 is 210123322.

It can be written as a sum of positive squares in 2 ways, for example, as 140801956 + 82519056 = 11866^2 + 9084^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223321019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 526489 + ... + 526912.

It is an arithmetic number, because the mean of its divisors is an integer number (33182163).

Almost surely, 2^223321012 is an apocalyptic number.

It is an amenable number.

223321012 is a deficient number, since it is larger than the sum of its proper divisors (174864944).

223321012 is a wasteful number, since it uses less digits than its factorization.

223321012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053458 (or 1053456 counting only the distinct ones).

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

The square root of 223321012 is about 14943.9289345205. The cubic root of 223321012 is about 606.7035401382.

Adding to 223321012 its reverse (210123322), we get a palindrome (433444334).

The spelling of 223321012 in words is "two hundred twenty-three million, three hundred twenty-one thousand, twelve".