12013311412 has 24 divisors (see below), whose sum is σ = 22146899040. Its totient is φ = 5686115040.

The previous prime is 12013311397. The next prime is 12013311413. The reversal of 12013311412 is 21411331021.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 12013311412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013311413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38862 + ... + 159802.

It is an arithmetic number, because the mean of its divisors is an integer number (922787460).

Almost surely, 2^12013311412 is an apocalyptic number.

It is an amenable number.

12013311412 is a deficient number, since it is larger than the sum of its proper divisors (10133587628).

12013311412 is a wasteful number, since it uses less digits than its factorization.

12013311412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122271 (or 122269 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12013311412 its reverse (21411331021), we get a palindrome (33424642433).

The spelling of 12013311412 in words is "twelve billion, thirteen million, three hundred eleven thousand, four hundred twelve".