1320111113201 has 4 divisors (see below), whose sum is σ = 1365632186100. Its totient is φ = 1274590040304.

The previous prime is 1320111113197. The next prime is 1320111113203. The reversal of 1320111113201 is 1023111110231.

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 671868744976 + 648242368225 = 819676^2 + 805135^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320111113201 - 2² = 1320111113197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320111113201.

It is not an unprimeable number, because it can be changed into a prime (1320111113203) 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 3 ways as a sum of consecutive naturals, for example, 22760536406 + ... + 22760536463.

It is an arithmetic number, because the mean of its divisors is an integer number (341408046525).

Almost surely, 2^{1320111113201} is an apocalyptic number.

It is an amenable number.

1320111113201 is a deficient number, since it is larger than the sum of its proper divisors (45521072899).

1320111113201 is an equidigital number, since it uses as much as digits as its factorization.

1320111113201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45521072898.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1320111113201 its reverse (1023111110231), we get a palindrome (2343222223432).

The spelling of 1320111113201 in words is "one trillion, three hundred twenty billion, one hundred eleven million, one hundred thirteen thousand, two hundred one".