1223323321003 has 16 divisors (see below), whose sum is σ = 1443348301824. Its totient is φ = 1014622202880.

The previous prime is 1223323320911. The next prime is 1223323321007. The reversal of 1223323321003 is 3001233233221.

It is a de Polignac number, because none of the positive numbers 2^k-1223323321003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223323321007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1606251 + ... + 2242027.

It is an arithmetic number, because the mean of its divisors is an integer number (90209268864).

Almost surely, 2^{1223323321003} is an apocalyptic number.

1223323321003 is a deficient number, since it is larger than the sum of its proper divisors (220024980821).

1223323321003 is an equidigital number, since it uses as much as digits as its factorization.

1223323321003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644682.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 1223323321003 its reverse (3001233233221), we get a palindrome (4224556554224).

The spelling of 1223323321003 in words is "one trillion, two hundred twenty-three billion, three hundred twenty-three million, three hundred twenty-one thousand, three".