12223311 has 4 divisors (see below), whose sum is σ = 16297752. Its totient is φ = 8148872.

The previous prime is 12223307. The next prime is 12223313. The reversal of 12223311 is 11332221.

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

It is a cyclic number.

It is not a de Polignac number, because 12223311 - 2² = 12223307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12223313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2037216 + ... + 2037221.

It is an arithmetic number, because the mean of its divisors is an integer number (4074438).

Almost surely, 2^12223311 is an apocalyptic number.

12223311 is a deficient number, since it is larger than the sum of its proper divisors (4074441).

12223311 is an equidigital number, since it uses as much as digits as its factorization.

12223311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4074440.

The product of its digits is 72, while the sum is 15.

The square root of 12223311 is about 3496.1852067647. The cubic root of 12223311 is about 230.3542807202.

Adding to 12223311 its reverse (11332221), we get a palindrome (23555532).

The spelling of 12223311 in words is "twelve million, two hundred twenty-three thousand, three hundred eleven".