20102010111105 has 64 divisors (see below), whose sum is σ = 35445016400640. Its totient is φ = 9665629295616.

The previous prime is 20102010111067. The next prime is 20102010111121. The reversal of 20102010111105 is 50111101020102.

It is not a de Polignac number, because 20102010111105 - 2⁸ = 20102010110849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 155200311 + ... + 155329779.

It is an arithmetic number, because the mean of its divisors is an integer number (553828381260).

Almost surely, 2^{20102010111105} is an apocalyptic number.

It is an amenable number.

20102010111105 is a deficient number, since it is larger than the sum of its proper divisors (15343006289535).

20102010111105 is a wasteful number, since it uses less digits than its factorization.

20102010111105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148050.

The product of its (nonzero) digits is 20, while the sum is 15.

Adding to 20102010111105 its reverse (50111101020102), we get a palindrome (70213111131207).

The spelling of 20102010111105 in words is "twenty trillion, one hundred two billion, ten million, one hundred eleven thousand, one hundred five".