20111112110101 has 8 divisors (see below), whose sum is σ = 20304400160000. Its totient is φ = 19917983741040.

The previous prime is 20111112110083. The next prime is 20111112110113. The reversal of 20111112110101 is 10101121111102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20111112110101 - 2¹⁹ = 20111111585813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111112110161) 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 7 ways as a sum of consecutive naturals, for example, 39667101 + ... + 40170898.

It is an arithmetic number, because the mean of its divisors is an integer number (2538050020000).

Almost surely, 2^{20111112110101} is an apocalyptic number.

It is an amenable number.

20111112110101 is a deficient number, since it is larger than the sum of its proper divisors (193288049899).

20111112110101 is a wasteful number, since it uses less digits than its factorization.

20111112110101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79840419.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 20111112110101 its reverse (10101121111102), we get a palindrome (30212233221203).

The spelling of 20111112110101 in words is "twenty trillion, one hundred eleven billion, one hundred twelve million, one hundred ten thousand, one hundred one".