12111320122 has 32 divisors (see below), whose sum is σ = 20297459520. Its totient is φ = 5373189120.

The previous prime is 12111320107. The next prime is 12111320131. The reversal of 12111320122 is 22102311121.

It is a junction number, because it is equal to n+sod(n) for n = 12111320096 and 12111320105.

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, 198129 + ... + 251947.

It is an arithmetic number, because the mean of its divisors is an integer number (634295610).

Almost surely, 2^12111320122 is an apocalyptic number.

12111320122 is a deficient number, since it is larger than the sum of its proper divisors (8186139398).

12111320122 is a wasteful number, since it uses less digits than its factorization.

12111320122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54078.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12111320122 its reverse (22102311121), we get a palindrome (34213631243).

Subtracting 12111320122 from its reverse (22102311121), we obtain a palindrome (9990990999).

It can be divided in two parts, 12111 and 320122, that added together give a palindrome (332233).

The spelling of 12111320122 in words is "twelve billion, one hundred eleven million, three hundred twenty thousand, one hundred twenty-two".