1321223030311 has 4 divisors (see below), whose sum is σ = 1398942032112. Its totient is φ = 1243504028512.

The previous prime is 1321223030291. The next prime is 1321223030341. The reversal of 1321223030311 is 1130303221231.

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

It is a cyclic number.

It is not a de Polignac number, because 1321223030311 - 2¹⁵ = 1321222997543 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 (1321223030341) 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, 38859500875 + ... + 38859500908.

It is an arithmetic number, because the mean of its divisors is an integer number (349735508028).

Almost surely, 2^{1321223030311} is an apocalyptic number.

1321223030311 is a deficient number, since it is larger than the sum of its proper divisors (77719001801).

1321223030311 is an equidigital number, since it uses as much as digits as its factorization.

1321223030311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77719001800.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1321223030311 its reverse (1130303221231), we get a palindrome (2451526251542).

The spelling of 1321223030311 in words is "one trillion, three hundred twenty-one billion, two hundred twenty-three million, thirty thousand, three hundred eleven".