1223205223 has 8 divisors (see below), whose sum is σ = 1265250816. Its totient is φ = 1181321400.

The previous prime is 1223205197. The next prime is 1223205227. The reversal of 1223205223 is 3225023221.

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

It is a cyclic number.

It is not a de Polignac number, because 1223205223 - 2⁹ = 1223204711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223205194 and 1223205203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223205227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24961 + ... + 55402.

It is an arithmetic number, because the mean of its divisors is an integer number (158156352).

Almost surely, 2^1223205223 is an apocalyptic number.

1223205223 is a deficient number, since it is larger than the sum of its proper divisors (42045593).

1223205223 is an equidigital number, since it uses as much as digits as its factorization.

1223205223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80885.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 1223205223 is about 34974.3509303604. The cubic root of 1223205223 is about 1069.4646703463.

Adding to 1223205223 its reverse (3225023221), we get a palindrome (4448228444).

The spelling of 1223205223 in words is "one billion, two hundred twenty-three million, two hundred five thousand, two hundred twenty-three".