1123223131112 has 32 divisors (see below), whose sum is σ = 2125488162600. Its totient is φ = 556426886400.

The previous prime is 1123223131111. The next prime is 1123223131139. The reversal of 1123223131112 is 2111313223211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 428624233636 + 694598897476 = 654694^2 + 833426^2 .

It is not an unprimeable number, because it can be changed into a prime (1123223131111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23503562 + ... + 23551302.

Almost surely, 2^{1123223131112} is an apocalyptic number.

It is an amenable number.

1123223131112 is a deficient number, since it is larger than the sum of its proper divisors (1002265031488).

1123223131112 is a wasteful number, since it uses less digits than its factorization.

1123223131112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74837 (or 74833 counting only the distinct ones).

The product of its digits is 432, while the sum is 23.

Adding to 1123223131112 its reverse (2111313223211), we get a palindrome (3234536354323).

The spelling of 1123223131112 in words is "one trillion, one hundred twenty-three billion, two hundred twenty-three million, one hundred thirty-one thousand, one hundred twelve".