20121110222122 has 16 divisors (see below), whose sum is σ = 37146665025792. Its totient is φ = 7959999648240.

The previous prime is 20121110222117. The next prime is 20121110222183. The reversal of 20121110222122 is 22122201112102.

It is a self number, because there is not a number n which added to its sum of digits gives 20121110222122.

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, 55277775154 + ... + 55277775517.

It is an arithmetic number, because the mean of its divisors is an integer number (2321666564112).

Almost surely, 2^{20121110222122} is an apocalyptic number.

20121110222122 is a deficient number, since it is larger than the sum of its proper divisors (17025554803670).

20121110222122 is a wasteful number, since it uses less digits than its factorization.

20121110222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110555550693.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20121110222122 its reverse (22122201112102), we get a palindrome (42243311334224).

The spelling of 20121110222122 in words is "twenty trillion, one hundred twenty-one billion, one hundred ten million, two hundred twenty-two thousand, one hundred twenty-two".