1321202311013 has 4 divisors (see below), whose sum is σ = 1422833258028. Its totient is φ = 1219571364000.

The previous prime is 1321202310947. The next prime is 1321202311027. The reversal of 1321202311013 is 3101132021231.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 373836862084 + 947365448929 = 611422^2 + 973327^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321202311013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321202311313) 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, 50815473488 + ... + 50815473513.

It is an arithmetic number, because the mean of its divisors is an integer number (355708314507).

Almost surely, 2^{1321202311013} is an apocalyptic number.

1321202311013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1321202311013 is a deficient number, since it is larger than the sum of its proper divisors (101630947015).

1321202311013 is a wasteful number, since it uses less digits than its factorization.

1321202311013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101630947014.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1321202311013 its reverse (3101132021231), we get a palindrome (4422334332244).

The spelling of 1321202311013 in words is "one trillion, three hundred twenty-one billion, two hundred two million, three hundred eleven thousand, thirteen".