12111222210122 has 16 divisors (see below), whose sum is σ = 20762372252160. Its totient is φ = 5190454545648.

The previous prime is 12111222210121. The next prime is 12111222210151. The reversal of 12111222210122 is 22101222211121.

It is a junction number, because it is equal to n+sod(n) for n = 12111222210094 and 12111222210103.

It is not an unprimeable number, because it can be changed into a prime (12111222210121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4677722 + ... + 6789957.

It is an arithmetic number, because the mean of its divisors is an integer number (1297648265760).

Almost surely, 2^{12111222210122} is an apocalyptic number.

12111222210122 is a deficient number, since it is larger than the sum of its proper divisors (8651150042038).

12111222210122 is a wasteful number, since it uses less digits than its factorization.

12111222210122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11543125.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12111222210122 its reverse (22101222211121), we get a palindrome (34212444421243).

Subtracting 12111222210122 from its reverse (22101222211121), we obtain a palindrome (9990000000999).

The spelling of 12111222210122 in words is "twelve trillion, one hundred eleven billion, two hundred twenty-two million, two hundred ten thousand, one hundred twenty-two".