20111112110011 has 16 divisors (see below), whose sum is σ = 22002176206080. Its totient is φ = 18270127643040.

The previous prime is 20111112110009. The next prime is 20111112110029. The reversal of 20111112110011 is 11001121111102.

It is not a de Polignac number, because 20111112110011 - 2¹ = 20111112110009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20111112109973 and 20111112110000.

It is not an unprimeable number, because it can be changed into a prime (20111112110051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18831021 + ... + 19870318.

It is an arithmetic number, because the mean of its divisors is an integer number (1375136012880).

Almost surely, 2^{20111112110011} is an apocalyptic number.

20111112110011 is a deficient number, since it is larger than the sum of its proper divisors (1891064096069).

20111112110011 is a wasteful number, since it uses less digits than its factorization.

20111112110011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38701986.

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

Adding to 20111112110011 its reverse (11001121111102), we get a palindrome (31112233221113).

The spelling of 20111112110011 in words is "twenty trillion, one hundred eleven billion, one hundred twelve million, one hundred ten thousand, eleven".