1313201322011 has 4 divisors (see below), whose sum is σ = 1313887785672. Its totient is φ = 1312514858352.

The previous prime is 1313201321963. The next prime is 1313201322053. The reversal of 1313201322011 is 1102231023131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1313201322011 - 2¹⁸ = 1313201059867 is a prime.

It is a super-2 number, since 2×1313201322011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313201322071) 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, 343228961 + ... + 343232786.

It is an arithmetic number, because the mean of its divisors is an integer number (328471946418).

Almost surely, 2^{1313201322011} is an apocalyptic number.

1313201322011 is a deficient number, since it is larger than the sum of its proper divisors (686463661).

1313201322011 is an equidigital number, since it uses as much as digits as its factorization.

1313201322011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686463660.

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

Adding to 1313201322011 its reverse (1102231023131), we get a palindrome (2415432345142).

The spelling of 1313201322011 in words is "one trillion, three hundred thirteen billion, two hundred one million, three hundred twenty-two thousand, eleven".