1123122212113 has 24 divisors (see below), whose sum is σ = 1261072786176. Its totient is φ = 999058220160.

The previous prime is 1123122212063. The next prime is 1123122212117. The reversal of 1123122212113 is 3112122213211.

It is a happy number.

It is not a de Polignac number, because 1123122212113 - 2¹⁷ = 1123122081041 is a prime.

It is a super-2 number, since 2×1123122212113² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123122212117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26463156 + ... + 26505562.

It is an arithmetic number, because the mean of its divisors is an integer number (52544699424).

Almost surely, 2^{1123122212113} is an apocalyptic number.

It is an amenable number.

1123122212113 is a deficient number, since it is larger than the sum of its proper divisors (137950574063).

1123122212113 is a wasteful number, since it uses less digits than its factorization.

1123122212113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47133 (or 47122 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

Adding to 1123122212113 its reverse (3112122213211), we get a palindrome (4235244425324).

The spelling of 1123122212113 in words is "one trillion, one hundred twenty-three billion, one hundred twenty-two million, two hundred twelve thousand, one hundred thirteen".