20101001111011 has 4 divisors (see below), whose sum is σ = 20101061638224. Its totient is φ = 20100940583800.

The previous prime is 20101001110919. The next prime is 20101001111027. The reversal of 20101001111011 is 11011110010102.

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 20101001111011 - 2²¹ = 20100999013859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20101001112011) 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 3 ways as a sum of consecutive naturals, for example, 29762695 + ... + 30430576.

It is an arithmetic number, because the mean of its divisors is an integer number (5025265409556).

Almost surely, 2^{20101001111011} is an apocalyptic number.

20101001111011 is a deficient number, since it is larger than the sum of its proper divisors (60527213).

20101001111011 is an equidigital number, since it uses as much as digits as its factorization.

20101001111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60527212.

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

Adding to 20101001111011 its reverse (11011110010102), we get a palindrome (31112111121113).

The spelling of 20101001111011 in words is "twenty trillion, one hundred one billion, one million, one hundred eleven thousand, eleven".