20102111106 has 64 divisors (see below), whose sum is σ = 50490777600. Its totient is φ = 5183199360.

The previous prime is 20102111069. The next prime is 20102111111. The reversal of 20102111106 is 60111120102.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95506 + ... + 222093.

It is an arithmetic number, because the mean of its divisors is an integer number (788918400).

Almost surely, 2^20102111106 is an apocalyptic number.

20102111106 is an abundant number, since it is smaller than the sum of its proper divisors (30388666494).

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

20102111106 is a wasteful number, since it uses less digits than its factorization.

20102111106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317759.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 20102111106 its reverse (60111120102), we get a palindrome (80213231208).

The spelling of 20102111106 in words is "twenty billion, one hundred two million, one hundred eleven thousand, one hundred six".