20011010011 has 2 divisors, whose sum is σ = 20011010012. Its totient is φ = 20011010010.

The previous prime is 20011010009. The next prime is 20011010017. The reversal of 20011010011 is 11001011002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20011010011 - 2¹ = 20011010009 is a prime.

Together with 20011010009, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 20011009976 and 20011010003.

It is not a weakly prime, because it can be changed into another prime (20011010017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005505005 + 10005505006.

It is an arithmetic number, because the mean of its divisors is an integer number (10005505006).

Almost surely, 2^20011010011 is an apocalyptic number.

20011010011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011010011 is an equidigital number, since it uses as much as digits as its factorization.

20011010011 is an evil number, because the sum of its binary digits is even.

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

Adding to 20011010011 its reverse (11001011002), we get a palindrome (31012021013).

Subtracting from 20011010011 its reverse (11001011002), we obtain a palindrome (9009999009).

The spelling of 20011010011 in words is "twenty billion, eleven million, ten thousand, eleven".