1321313020011 has 24 divisors (see below), whose sum is σ = 1961501384544. Its totient is φ = 856475285760.

The previous prime is 1321313020009. The next prime is 1321313020021. The reversal of 1321313020011 is 1100203131231.

1321313020011 is a `hidden beast` number, since 1 + 321 + 3 + 130 + 200 + 11 = 666.

It is not a de Polignac number, because 1321313020011 - 2¹ = 1321313020009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321313020021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 889230 + ... + 1852931.

It is an arithmetic number, because the mean of its divisors is an integer number (81729224356).

Almost surely, 2^{1321313020011} is an apocalyptic number.

1321313020011 is a deficient number, since it is larger than the sum of its proper divisors (640188364533).

1321313020011 is a wasteful number, since it uses less digits than its factorization.

1321313020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2743651 (or 2743648 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1321313020011 its reverse (1100203131231), we get a palindrome (2421516151242).

The spelling of 1321313020011 in words is "one trillion, three hundred twenty-one billion, three hundred thirteen million, twenty thousand, eleven".