1331321201013 has 16 divisors (see below), whose sum is σ = 1792582937600. Its totient is φ = 878837163120.

The previous prime is 1331321200999. The next prime is 1331321201039. The reversal of 1331321201013 is 3101021231331.

It is a happy number.

It is not a de Polignac number, because 1331321201013 - 2¹⁷ = 1331321069941 is a prime.

It is a super-2 number, since 2×1331321201013² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331321201053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4053853 + ... + 4369938.

It is an arithmetic number, because the mean of its divisors is an integer number (112036433600).

Almost surely, 2^{1331321201013} is an apocalyptic number.

It is an amenable number.

1331321201013 is a deficient number, since it is larger than the sum of its proper divisors (461261736587).

1331321201013 is a wasteful number, since it uses less digits than its factorization.

1331321201013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8424312.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1331321201013 its reverse (3101021231331), we get a palindrome (4432342432344).

The spelling of 1331321201013 in words is "one trillion, three hundred thirty-one billion, three hundred twenty-one million, two hundred one thousand, thirteen".