22001223 has 4 divisors (see below), whose sum is σ = 29334968. Its totient is φ = 14667480.

The previous prime is 22001209. The next prime is 22001237. The reversal of 22001223 is 32210022.

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

It is an interprime number because it is at equal distance from previous prime (22001209) and next prime (22001237).

It is not a de Polignac number, because 22001223 - 2⁴ = 22001207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22001199 and 22001208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22006223) 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, 3666868 + ... + 3666873.

It is an arithmetic number, because the mean of its divisors is an integer number (7333742).

Almost surely, 2^22001223 is an apocalyptic number.

22001223 is a deficient number, since it is larger than the sum of its proper divisors (7333745).

22001223 is an equidigital number, since it uses as much as digits as its factorization.

22001223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7333744.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 22001223 is about 4690.5461302497. The cubic root of 22001223 is about 280.2091252331.

Adding to 22001223 its reverse (32210022), we get a palindrome (54211245).

The spelling of 22001223 in words is "twenty-two million, one thousand, two hundred twenty-three".