12113221122 has 24 divisors (see below), whose sum is σ = 26319675564. Its totient is φ = 4026299904.

The previous prime is 12113221103. The next prime is 12113221187. The reversal of 12113221122 is 22112231121.

It can be written as a sum of positive squares in 2 ways, for example, as 11588307201 + 524913921 = 107649^2 + 22911^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 12113221095 and 12113221104.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 946843 + ... + 959550.

Almost surely, 2^12113221122 is an apocalyptic number.

12113221122 is an abundant number, since it is smaller than the sum of its proper divisors (14206454442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12113221122 is a wasteful number, since it uses less digits than its factorization.

12113221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906754 (or 1906751 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

Adding to 12113221122 its reverse (22112231121), we get a palindrome (34225452243).

Subtracting 12113221122 from its reverse (22112231121), we obtain a palindrome (9999009999).

The spelling of 12113221122 in words is "twelve billion, one hundred thirteen million, two hundred twenty-one thousand, one hundred twenty-two".