12101111222122 has 16 divisors (see below), whose sum is σ = 20576788313760. Its totient is φ = 5291174137392.

The previous prime is 12101111222119. The next prime is 12101111222131. The reversal of 12101111222122 is 22122211110121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 12101111222122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12248087788 + ... + 12248088775.

It is an arithmetic number, because the mean of its divisors is an integer number (1286049269610).

Almost surely, 2^{12101111222122} is an apocalyptic number.

12101111222122 is a deficient number, since it is larger than the sum of its proper divisors (8475677091638).

12101111222122 is a wasteful number, since it uses less digits than its factorization.

12101111222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24496176597.

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

Adding to 12101111222122 its reverse (22122211110121), we get a palindrome (34223322332243).

The spelling of 12101111222122 in words is "twelve trillion, one hundred one billion, one hundred eleven million, two hundred twenty-two thousand, one hundred twenty-two".