12013023211213 has 48 divisors (see below), whose sum is σ = 13297488978384. Its totient is φ = 10814100111360.

The previous prime is 12013023211199. The next prime is 12013023211219. The reversal of 12013023211213 is 31211232031021.

It can be written as a sum of positive squares in 24 ways, for example, as 3544585647849 + 8468437563364 = 1882707^2 + 2910058^2 .

It is not a de Polignac number, because 12013023211213 - 2¹³ = 12013023203021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013023211219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 756432033 + ... + 756447913.

It is an arithmetic number, because the mean of its divisors is an integer number (277031020383).

Almost surely, 2^{12013023211213} is an apocalyptic number.

It is an amenable number.

12013023211213 is a deficient number, since it is larger than the sum of its proper divisors (1284465767171).

12013023211213 is a wasteful number, since it uses less digits than its factorization.

12013023211213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16450 (or 16421 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 12013023211213 its reverse (31211232031021), we get a palindrome (43224255242234).

The spelling of 12013023211213 in words is "twelve trillion, thirteen billion, twenty-three million, two hundred eleven thousand, two hundred thirteen".