1123221223 has 2 divisors, whose sum is σ = 1123221224. Its totient is φ = 1123221222.

The previous prime is 1123221221. The next prime is 1123221269. The reversal of 1123221223 is 3221223211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123221223 - 2¹ = 1123221221 is a prime.

Together with 1123221221, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1123221223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123221221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561610611 + 561610612.

It is an arithmetic number, because the mean of its divisors is an integer number (561610612).

Almost surely, 2^1123221223 is an apocalyptic number.

1123221223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123221223 is an equidigital number, since it uses as much as digits as its factorization.

1123221223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 19.

The square root of 1123221223 is about 33514.4927307575. The cubic root of 1123221223 is about 1039.4934734450.

Adding to 1123221223 its reverse (3221223211), we get a palindrome (4344444434).

The spelling of 1123221223 in words is "one billion, one hundred twenty-three million, two hundred twenty-one thousand, two hundred twenty-three".