20611100111107 has 8 divisors (see below), whose sum is σ = 22703135869440. Its totient is φ = 18555447583560.

The previous prime is 20611100111101. The next prime is 20611100111111. The reversal of 20611100111107 is 70111100111602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20611100111107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20611100111101) 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, 9095806507 + ... + 9095808772.

It is an arithmetic number, because the mean of its divisors is an integer number (2837891983680).

Almost surely, 2^{20611100111107} is an apocalyptic number.

20611100111107 is a deficient number, since it is larger than the sum of its proper divisors (2092035758333).

20611100111107 is a wasteful number, since it uses less digits than its factorization.

20611100111107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18191615393.

The product of its (nonzero) digits is 84, while the sum is 22.

Multiplying 20611100111107 by its sum of digits (22), we get a palindrome (453444202444354).

Adding to 20611100111107 its reverse (70111100111602), we get a palindrome (90722200222709).

The spelling of 20611100111107 in words is "twenty trillion, six hundred eleven billion, one hundred million, one hundred eleven thousand, one hundred seven".