1123221213223 has 4 divisors (see below), whose sum is σ = 1124925646680. Its totient is φ = 1121516779768.

The previous prime is 1123221213181. The next prime is 1123221213263. The reversal of 1123221213223 is 3223121223211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123221213223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123221213263) 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, 852215740 + ... + 852217057.

It is an arithmetic number, because the mean of its divisors is an integer number (281231411670).

Almost surely, 2^{1123221213223} is an apocalyptic number.

1123221213223 is a deficient number, since it is larger than the sum of its proper divisors (1704433457).

1123221213223 is an equidigital number, since it uses as much as digits as its factorization.

1123221213223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704433456.

The product of its digits is 1728, while the sum is 25.

Adding to 1123221213223 its reverse (3223121223211), we get a palindrome (4346342436434).

The spelling of 1123221213223 in words is "one trillion, one hundred twenty-three billion, two hundred twenty-one million, two hundred thirteen thousand, two hundred twenty-three".