20011000010011 has 16 divisors (see below), whose sum is σ = 20175462961920. Its totient is φ = 19846838570400.

The previous prime is 20011000010003. The next prime is 20011000010059. The reversal of 20011000010011 is 11001000011002.

It is a cyclic number.

It is not a de Polignac number, because 20011000010011 - 2³ = 20011000010003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20011000009976 and 20011000010003.

It is not an unprimeable number, because it can be changed into a prime (20011000010411) 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 15 ways as a sum of consecutive naturals, for example, 769729665 + ... + 769755661.

It is an arithmetic number, because the mean of its divisors is an integer number (1260966435120).

Almost surely, 2^{20011000010011} is an apocalyptic number.

20011000010011 is a deficient number, since it is larger than the sum of its proper divisors (164462951909).

20011000010011 is a wasteful number, since it uses less digits than its factorization.

20011000010011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31554.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 20011000010011 its reverse (11001000011002), we get a palindrome (31012000021013).

Subtracting from 20011000010011 its reverse (11001000011002), we obtain a palindrome (9009999999009).

The spelling of 20011000010011 in words is "twenty trillion, eleven billion, ten thousand, eleven".