12311124442 has 16 divisors (see below), whose sum is σ = 19728750240. Its totient is φ = 5744545488.

The previous prime is 12311124409. The next prime is 12311124443. The reversal of 12311124442 is 24442111321.

It is a super-2 number, since 2×12311124442² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12311124443) 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, 2415193 + ... + 2420284.

It is an arithmetic number, because the mean of its divisors is an integer number (1233046890).

Almost surely, 2^12311124442 is an apocalyptic number.

12311124442 is a deficient number, since it is larger than the sum of its proper divisors (7417625798).

12311124442 is a wasteful number, since it uses less digits than its factorization.

12311124442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4835565.

The product of its digits is 1536, while the sum is 25.

Adding to 12311124442 its reverse (24442111321), we get a palindrome (36753235763).

The spelling of 12311124442 in words is "twelve billion, three hundred eleven million, one hundred twenty-four thousand, four hundred forty-two".