20110111102122 has 64 divisors (see below), whose sum is σ = 42021376404480. Its totient is φ = 6403911300864.

The previous prime is 20110111101979. The next prime is 20110111102127. The reversal of 20110111102122 is 22120111101102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20110111102127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 389984713 + ... + 390036275.

It is an arithmetic number, because the mean of its divisors is an integer number (656584006320).

Almost surely, 2^{20110111102122} is an apocalyptic number.

20110111102122 is an abundant number, since it is smaller than the sum of its proper divisors (21911265302358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20110111102122 is a wasteful number, since it uses less digits than its factorization.

20110111102122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55067.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20110111102122 its reverse (22120111101102), we get a palindrome (42230222203224).

The spelling of 20110111102122 in words is "twenty trillion, one hundred ten billion, one hundred eleven million, one hundred two thousand, one hundred twenty-two".