1321321223223 has 6 divisors (see below), whose sum is σ = 1908575100224. Its totient is φ = 880880815476.

The previous prime is 1321321223203. The next prime is 1321321223267. The reversal of 1321321223223 is 3223221231231.

1321321223223 is a `hidden beast` number, since 1 + 3 + 213 + 2 + 1 + 223 + 223 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1321321223223 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 (1321321223203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73406734615 + ... + 73406734632.

Almost surely, 2^{1321321223223} is an apocalyptic number.

1321321223223 is a deficient number, since it is larger than the sum of its proper divisors (587253877001).

1321321223223 is a wasteful number, since it uses less digits than its factorization.

1321321223223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146813469253 (or 146813469250 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 1321321223223 its reverse (3223221231231), we get a palindrome (4544542454454).

The spelling of 1321321223223 in words is "one trillion, three hundred twenty-one billion, three hundred twenty-one million, two hundred twenty-three thousand, two hundred twenty-three".