12111222211122 has 32 divisors (see below), whose sum is σ = 24378458936832. Its totient is φ = 4011075304704.

The previous prime is 12111222211091. The next prime is 12111222211141. The reversal of 12111222211122 is 22111222211121.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13023978 + ... + 13922874.

It is an arithmetic number, because the mean of its divisors is an integer number (761826841776).

Almost surely, 2^{12111222211122} is an apocalyptic number.

12111222211122 is an abundant number, since it is smaller than the sum of its proper divisors (12267236725710).

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

12111222211122 is a wasteful number, since it uses less digits than its factorization.

12111222211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913362.

The product of its digits is 128, while the sum is 21.

Adding to 12111222211122 its reverse (22111222211121), we get a palindrome (34222444422243).

Subtracting 12111222211122 from its reverse (22111222211121), we obtain a palindrome (9999999999999).

The spelling of 12111222211122 in words is "twelve trillion, one hundred eleven billion, two hundred twenty-two million, two hundred eleven thousand, one hundred twenty-two".