22212223 has 8 divisors (see below), whose sum is σ = 24472656. Its totient is φ = 19992000.

The previous prime is 22212199. The next prime is 22212233. The reversal of 22212223 is 32221222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22212223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22212197 and 22212206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212233) 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 7 ways as a sum of consecutive naturals, for example, 8886 + ... + 11107.

It is an arithmetic number, because the mean of its divisors is an integer number (3059082).

Almost surely, 2^22212223 is an apocalyptic number.

22212223 is a deficient number, since it is larger than the sum of its proper divisors (2260433).

22212223 is a wasteful number, since it uses less digits than its factorization.

22212223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20105.

The product of its digits is 192, while the sum is 16.

The square root of 22212223 is about 4712.9845109018. The cubic root of 22212223 is about 281.1020470877.

Adding to 22212223 its reverse (32221222), we get a palindrome (54433445).

It can be divided in two parts, 2221222 and 3, that multiplied together give a palindrome (6663666).

The spelling of 22212223 in words is "twenty-two million, two hundred twelve thousand, two hundred twenty-three".