12313221233321 has 6 divisors (see below), whose sum is σ = 12871855089450. Its totient is φ = 11777863787888.

The previous prime is 12313221233317. The next prime is 12313221233323. The reversal of 12313221233321 is 12333212231321.

It can be written as a sum of positive squares in only one way, i.e., 12291587236096 + 21633997225 = 3505936^2 + 147085^2 .

It is not a de Polignac number, because 12313221233321 - 2² = 12313221233317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12313221233323) 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, 11638204796 + ... + 11638205853.

It is an arithmetic number, because the mean of its divisors is an integer number (2145309181575).

Almost surely, 2^{12313221233321} is an apocalyptic number.

It is an amenable number.

12313221233321 is a deficient number, since it is larger than the sum of its proper divisors (558633856129).

12313221233321 is an equidigital number, since it uses as much as digits as its factorization.

12313221233321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23276410695 (or 23276410672 counting only the distinct ones).

The product of its digits is 7776, while the sum is 29.

Adding to 12313221233321 its reverse (12333212231321), we get a palindrome (24646433464642).

The spelling of 12313221233321 in words is "twelve trillion, three hundred thirteen billion, two hundred twenty-one million, two hundred thirty-three thousand, three hundred twenty-one".