20201000122105 has 32 divisors (see below), whose sum is σ = 27838927169280. Its totient is φ = 13928507873280.

The previous prime is 20201000122063. The next prime is 20201000122187. The reversal of 20201000122105 is 50122100010202.

It is a happy number.

It is not a de Polignac number, because 20201000122105 - 2¹³ = 20201000113913 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70517100 + ... + 70802989.

It is an arithmetic number, because the mean of its divisors is an integer number (869966474040).

Almost surely, 2^{20201000122105} is an apocalyptic number.

It is an amenable number.

20201000122105 is a deficient number, since it is larger than the sum of its proper divisors (7637927047175).

20201000122105 is a wasteful number, since it uses less digits than its factorization.

20201000122105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141320241.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 20201000122105 its reverse (50122100010202), we get a palindrome (70323100132307).

The spelling of 20201000122105 in words is "twenty trillion, two hundred one billion, one hundred twenty-two thousand, one hundred five".