20012101000205 has 16 divisors (see below), whose sum is σ = 26377506126720. Its totient is φ = 14507628366528.

The previous prime is 20012101000139. The next prime is 20012101000217. The reversal of 20012101000205 is 50200010121002.

It is not a de Polignac number, because 20012101000205 - 2¹⁰ = 20012100999181 is a prime.

It is a super-2 number, since 2×20012101000205² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20012101000205.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 4579425962 + ... + 4579430331.

It is an arithmetic number, because the mean of its divisors is an integer number (1648594132920).

Almost surely, 2^{20012101000205} is an apocalyptic number.

It is an amenable number.

20012101000205 is a deficient number, since it is larger than the sum of its proper divisors (6365405126515).

20012101000205 is a wasteful number, since it uses less digits than its factorization.

20012101000205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9158856340.

The product of its (nonzero) digits is 40, while the sum is 14.

Adding to 20012101000205 its reverse (50200010121002), we get a palindrome (70212111121207).

The spelling of 20012101000205 in words is "twenty trillion, twelve billion, one hundred one million, two hundred five", and thus it is an aban number.