20401110011 has 2 divisors, whose sum is σ = 20401110012. Its totient is φ = 20401110010.

The previous prime is 20401109999. The next prime is 20401110071. The reversal of 20401110011 is 11001110402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20401110011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20401109974 and 20401110001.

It is not a weakly prime, because it can be changed into another prime (20401110071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10200555005 + 10200555006.

It is an arithmetic number, because the mean of its divisors is an integer number (10200555006).

Almost surely, 2^20401110011 is an apocalyptic number.

20401110011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20401110011 is an equidigital number, since it uses as much as digits as its factorization.

20401110011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20401110011 its reverse (11001110402), we get a palindrome (31402220413).

The spelling of 20401110011 in words is "twenty billion, four hundred one million, one hundred ten thousand, eleven".