1211311330113 has 16 divisors (see below), whose sum is σ = 1634652371520. Its totient is φ = 797756918784.

The previous prime is 1211311330079. The next prime is 1211311330199. The reversal of 1211311330113 is 3110331131121.

It is not a de Polignac number, because 1211311330113 - 2¹³ = 1211311321921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1211311330113.

It is not an unprimeable number, because it can be changed into a prime (1211311332113) 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, 3658245 + ... + 3975597.

It is an arithmetic number, because the mean of its divisors is an integer number (102165773220).

Almost surely, 2^{1211311330113} is an apocalyptic number.

It is an amenable number.

1211311330113 is a deficient number, since it is larger than the sum of its proper divisors (423341041407).

1211311330113 is a wasteful number, since it uses less digits than its factorization.

1211311330113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332768.

The product of its (nonzero) digits is 162, while the sum is 21.

Adding to 1211311330113 its reverse (3110331131121), we get a palindrome (4321642461234).

The spelling of 1211311330113 in words is "one trillion, two hundred eleven billion, three hundred eleven million, three hundred thirty thousand, one hundred thirteen".