1311222111303 has 16 divisors (see below), whose sum is σ = 1894054611456. Its totient is φ = 802074138720.

The previous prime is 1311222111247. The next prime is 1311222111337. The reversal of 1311222111303 is 3031112221131.

It is not a de Polignac number, because 1311222111303 - 2⁹ = 1311222110791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1311222111303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311222111343) 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, 100655403 + ... + 100668428.

It is an arithmetic number, because the mean of its divisors is an integer number (118378413216).

Almost surely, 2^{1311222111303} is an apocalyptic number.

1311222111303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1311222111303 is a deficient number, since it is larger than the sum of its proper divisors (582832500153).

1311222111303 is a wasteful number, since it uses less digits than its factorization.

1311222111303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201324014.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1311222111303 its reverse (3031112221131), we get a palindrome (4342334332434).

The spelling of 1311222111303 in words is "one trillion, three hundred eleven billion, two hundred twenty-two million, one hundred eleven thousand, three hundred three".