12111101222122 has 32 divisors (see below), whose sum is σ = 21291612249600. Its totient is φ = 5058957323520.

The previous prime is 12111101222111. The next prime is 12111101222161. The reversal of 12111101222122 is 22122210111121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12111101222122.

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, 38027997 + ... + 38345152.

It is an arithmetic number, because the mean of its divisors is an integer number (665362882800).

Almost surely, 2^{12111101222122} is an apocalyptic number.

12111101222122 is a deficient number, since it is larger than the sum of its proper divisors (9180511027478).

12111101222122 is a wasteful number, since it uses less digits than its factorization.

12111101222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76373446.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12111101222122 its reverse (22122210111121), we get a palindrome (34233311333243).

The spelling of 12111101222122 in words is "twelve trillion, one hundred eleven billion, one hundred one million, two hundred twenty-two thousand, one hundred twenty-two".