12126311236 has 24 divisors (see below), whose sum is σ = 23175319104. Its totient is φ = 5517929760.

The previous prime is 12126311213. The next prime is 12126311237. The reversal of 12126311236 is 63211362121.

It is not an unprimeable number, because it can be changed into a prime (12126311237) 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, 1638550 + ... + 1645933.

It is an arithmetic number, because the mean of its divisors is an integer number (965638296).

Almost surely, 2^12126311236 is an apocalyptic number.

It is an amenable number.

12126311236 is a deficient number, since it is larger than the sum of its proper divisors (11049007868).

12126311236 is a wasteful number, since it uses less digits than its factorization.

12126311236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3284571 (or 3284569 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

Adding to 12126311236 its reverse (63211362121), we get a palindrome (75337673357).

The spelling of 12126311236 in words is "twelve billion, one hundred twenty-six million, three hundred eleven thousand, two hundred thirty-six".