12111212122113 has 16 divisors (see below), whose sum is σ = 17569741513856. Its totient is φ = 7376218007040.

The previous prime is 12111212122111. The next prime is 12111212122153. The reversal of 12111212122113 is 31122121211121.

It is not a de Polignac number, because 12111212122113 - 2¹ = 12111212122111 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 12111212122113.

It is not an unprimeable number, because it can be changed into a prime (12111212122111) 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 15 ways as a sum of consecutive naturals, for example, 1600737973 + ... + 1600745538.

It is an arithmetic number, because the mean of its divisors is an integer number (1098108844616).

Almost surely, 2^{12111212122113} is an apocalyptic number.

12111212122113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12111212122113 is a deficient number, since it is larger than the sum of its proper divisors (5458529391743).

12111212122113 is a wasteful number, since it uses less digits than its factorization.

12111212122113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3201483624.

The product of its digits is 96, while the sum is 21.

Adding to 12111212122113 its reverse (31122121211121), we get a palindrome (43233333333234).

The spelling of 12111212122113 in words is "twelve trillion, one hundred eleven billion, two hundred twelve million, one hundred twenty-two thousand, one hundred thirteen".