20110010111111 has 4 divisors (see below), whose sum is σ = 20110027400400. Its totient is φ = 20109992821824.

The previous prime is 20110010111089. The next prime is 20110010111141. The reversal of 20110010111111 is 11111101001102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20110010111111 - 2⁶ = 20110010111047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20110010111092 and 20110010111101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110010111141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6763466 + ... + 9271703.

It is an arithmetic number, because the mean of its divisors is an integer number (5027506850100).

Almost surely, 2^{20110010111111} is an apocalyptic number.

20110010111111 is a deficient number, since it is larger than the sum of its proper divisors (17289289).

20110010111111 is a wasteful number, since it uses less digits than its factorization.

20110010111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17289288.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 20110010111111 its reverse (11111101001102), we get a palindrome (31221111112213).

The spelling of 20110010111111 in words is "twenty trillion, one hundred ten billion, ten million, one hundred eleven thousand, one hundred eleven".