20110101000111 has 6 divisors (see below), whose sum is σ = 29047923666840. Its totient is φ = 13406734000068.

The previous prime is 20110101000103. The next prime is 20110101000149. The reversal of 20110101000111 is 11100010101102.

It is not a de Polignac number, because 20110101000111 - 2³ = 20110101000103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 2234455666679 = 20110101000111 / (2 + 0 + 1 + 1 + 0 + 1 + 0 + 1 + 0 + 0 + 0 + 1 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 20110101000093 and 20110101000102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110101000161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1117227833331 + ... + 1117227833348.

It is an arithmetic number, because the mean of its divisors is an integer number (4841320611140).

Almost surely, 2^{20110101000111} is an apocalyptic number.

20110101000111 is a deficient number, since it is larger than the sum of its proper divisors (8937822666729).

20110101000111 is a wasteful number, since it uses less digits than its factorization.

20110101000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234455666685 (or 2234455666682 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 20110101000111 its reverse (11100010101102), we get a palindrome (31210111101213).

The spelling of 20110101000111 in words is "twenty trillion, one hundred ten billion, one hundred one million, one hundred eleven", and thus it is an aban number.