20111112110103 has 8 divisors (see below), whose sum is σ = 30645504167808. Its totient is φ = 11492064062904.

The previous prime is 20111112110083. The next prime is 20111112110113. The reversal of 20111112110103 is 30101121111102.

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

It is not a de Polignac number, because 20111112110103 - 2⁶ = 20111112110039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111112110113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478836002601 + ... + 478836002642.

It is an arithmetic number, because the mean of its divisors is an integer number (3830688020976).

Almost surely, 2^{20111112110103} is an apocalyptic number.

20111112110103 is a deficient number, since it is larger than the sum of its proper divisors (10534392057705).

20111112110103 is an equidigital number, since it uses as much as digits as its factorization.

20111112110103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957672005253.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 20111112110103 its reverse (30101121111102), we get a palindrome (50212233221205).

Subtracting 20111112110103 from its reverse (30101121111102), we obtain a palindrome (9990009000999).

It can be divided in two parts, 2011111 and 2110103, that added together give a palindrome (4121214).

The spelling of 20111112110103 in words is "twenty trillion, one hundred eleven billion, one hundred twelve million, one hundred ten thousand, one hundred three".