2020012100111 has 16 divisors (see below), whose sum is σ = 2212840801440. Its totient is φ = 1835421020160.

The previous prime is 2020012100083. The next prime is 2020012100131. The reversal of 2020012100111 is 1110012100202.

It is a cyclic number.

It is not a de Polignac number, because 2020012100111 - 2¹⁸ = 2020011837967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020012100092 and 2020012100101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020012100131) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4194335 + ... + 4651071.

It is an arithmetic number, because the mean of its divisors is an integer number (138302550090).

Almost surely, 2^{2020012100111} is an apocalyptic number.

2020012100111 is a deficient number, since it is larger than the sum of its proper divisors (192828701329).

2020012100111 is a wasteful number, since it uses less digits than its factorization.

2020012100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465754.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2020012100111 its reverse (1110012100202), we get a palindrome (3130024200313).

Subtracting from 2020012100111 its reverse (1110012100202), we obtain a palindrome (909999999909).

The spelling of 2020012100111 in words is "two trillion, twenty billion, twelve million, one hundred thousand, one hundred eleven".