1231321321322 has 16 divisors (see below), whose sum is σ = 1854244886472. Its totient is φ = 613239889920.

The previous prime is 1231321321319. The next prime is 1231321321331. The reversal of 1231321321322 is 2231231231321.

It can be written as a sum of positive squares in 4 ways, for example, as 1231098983401 + 222337921 = 1109549^2 + 14911^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1231321321291 and 1231321321300.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22568708 + ... + 22623200.

Almost surely, 2^{1231321321322} is an apocalyptic number.

1231321321322 is a deficient number, since it is larger than the sum of its proper divisors (622923565150).

1231321321322 is a wasteful number, since it uses less digits than its factorization.

1231321321322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98713.

The product of its digits is 2592, while the sum is 26.

Adding to 1231321321322 its reverse (2231231231321), we get a palindrome (3462552552643).

Subtracting 1231321321322 from its reverse (2231231231321), we obtain a palindrome (999909909999).

The spelling of 1231321321322 in words is "one trillion, two hundred thirty-one billion, three hundred twenty-one million, three hundred twenty-one thousand, three hundred twenty-two".