12111220111122 has 48 divisors (see below), whose sum is σ = 29292253312608. Its totient is φ = 3584716309440.

The previous prime is 12111220111063. The next prime is 12111220111129. The reversal of 12111220111122 is 22111102211121.

It is a happy number.

12111220111122 is a `hidden beast` number, since 1 + 211 + 1 + 220 + 111 + 122 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 12111220111095 and 12111220111104.

It is not an unprimeable number, because it can be changed into a prime (12111220111129) 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, 711244723 + ... + 711261750.

It is an arithmetic number, because the mean of its divisors is an integer number (610255277346).

Almost surely, 2^{12111220111122} is an apocalyptic number.

12111220111122 is an abundant number, since it is smaller than the sum of its proper divisors (17181033201486).

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

12111220111122 is a wasteful number, since it uses less digits than its factorization.

12111220111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422506535 (or 1422506532 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 12111220111122 its reverse (22111102211121), we get a palindrome (34222322322243).

The spelling of 12111220111122 in words is "twelve trillion, one hundred eleven billion, two hundred twenty million, one hundred eleven thousand, one hundred twenty-two".