1211331013113 has 16 divisors (see below), whose sum is σ = 1776354483456. Its totient is φ = 729574160640.

The previous prime is 1211331013063. The next prime is 1211331013153. The reversal of 1211331013113 is 3113101331121.

It is not a de Polignac number, because 1211331013113 - 2⁹ = 1211331012601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1211331013113.

It is not an unprimeable number, because it can be changed into a prime (1211331013153) 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, 330421248 + ... + 330424913.

It is an arithmetic number, because the mean of its divisors is an integer number (111022155216).

Almost surely, 2^{1211331013113} is an apocalyptic number.

1211331013113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1211331013113 is a deficient number, since it is larger than the sum of its proper divisors (565023470343).

1211331013113 is a wasteful number, since it uses less digits than its factorization.

1211331013113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660846224.

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

Adding to 1211331013113 its reverse (3113101331121), we get a palindrome (4324432344234).

The spelling of 1211331013113 in words is "one trillion, two hundred eleven billion, three hundred thirty-one million, thirteen thousand, one hundred thirteen".