1321321321311 has 8 divisors (see below), whose sum is σ = 1761767982384. Its totient is φ = 880877770560.

The previous prime is 1321321321301. The next prime is 1321321321349. The reversal of 1321321321311 is 1131231231231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1321321321311 - 2⁵ = 1321321321279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321321321301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525741 + ... + 1708521.

It is an arithmetic number, because the mean of its divisors is an integer number (220220997798).

Almost surely, 2^{1321321321311} is an apocalyptic number.

1321321321311 is a deficient number, since it is larger than the sum of its proper divisors (440446661073).

1321321321311 is a wasteful number, since it uses less digits than its factorization.

1321321321311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555161.

The product of its digits is 648, while the sum is 24.

Adding to 1321321321311 its reverse (1131231231231), we get a palindrome (2452552552542).

The spelling of 1321321321311 in words is "one trillion, three hundred twenty-one billion, three hundred twenty-one million, three hundred twenty-one thousand, three hundred eleven".