1311300312221 has 8 divisors (see below), whose sum is σ = 1339660823040. Its totient is φ = 1282958989168.

The previous prime is 1311300312209. The next prime is 1311300312229. The reversal of 1311300312221 is 1222130031131.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311300312221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1311300312193 and 1311300312202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311300312229) 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, 4658741 + ... + 4932186.

It is an arithmetic number, because the mean of its divisors is an integer number (167457602880).

Almost surely, 2^{1311300312221} is an apocalyptic number.

It is an amenable number.

1311300312221 is a deficient number, since it is larger than the sum of its proper divisors (28360510819).

1311300312221 is an equidigital number, since it uses as much as digits as its factorization.

1311300312221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9593883.

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

Adding to 1311300312221 its reverse (1222130031131), we get a palindrome (2533430343352).

The spelling of 1311300312221 in words is "one trillion, three hundred eleven billion, three hundred million, three hundred twelve thousand, two hundred twenty-one".