20011110101011 has 4 divisors (see below), whose sum is σ = 20292956722224. Its totient is φ = 19729263479800.

The previous prime is 20011110101009. The next prime is 20011110101053. The reversal of 20011110101011 is 11010101111002.

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 20011110101011 - 2¹ = 20011110101009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20011110101711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140923310500 + ... + 140923310641.

It is an arithmetic number, because the mean of its divisors is an integer number (5073239180556).

Almost surely, 2^{20011110101011} is an apocalyptic number.

20011110101011 is a deficient number, since it is larger than the sum of its proper divisors (281846621213).

20011110101011 is an equidigital number, since it uses as much as digits as its factorization.

20011110101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281846621212.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 20011110101011 its reverse (11010101111002), we get a palindrome (31021211212013).

The spelling of 20011110101011 in words is "twenty trillion, eleven billion, one hundred ten million, one hundred one thousand, eleven".