20011012112105 has 64 divisors (see below), whose sum is σ = 28925937907200. Its totient is φ = 12982609704960.

The previous prime is 20011012112087. The next prime is 20011012112177. The reversal of 20011012112105 is 50121121011002.

It is not a de Polignac number, because 20011012112105 - 2⁶ = 20011012112041 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1965520115 + ... + 1965530295.

It is an arithmetic number, because the mean of its divisors is an integer number (451967779800).

Almost surely, 2^{20011012112105} is an apocalyptic number.

It is an amenable number.

20011012112105 is a deficient number, since it is larger than the sum of its proper divisors (8914925795095).

20011012112105 is a wasteful number, since it uses less digits than its factorization.

20011012112105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13794.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 20011012112105 its reverse (50121121011002), we get a palindrome (70132133123107).

The spelling of 20011012112105 in words is "twenty trillion, eleven billion, twelve million, one hundred twelve thousand, one hundred five".