20111200100011 has 2 divisors, whose sum is σ = 20111200100012. Its totient is φ = 20111200100010.

The previous prime is 20111200099993. The next prime is 20111200100021. The reversal of 20111200100011 is 11000100211102.

It is an a-pointer prime, because the next prime (20111200100021) can be obtained adding 20111200100011 to its sum of digits (10).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20111200100011 - 2⁷ = 20111200099883 is a prime.

It is not a weakly prime, because it can be changed into another prime (20111200100021) 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 as a sum of consecutive naturals, namely, 10055600050005 + 10055600050006.

It is an arithmetic number, because the mean of its divisors is an integer number (10055600050006).

Almost surely, 2^{20111200100011} is an apocalyptic number.

20111200100011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111200100011 is an equidigital number, since it uses as much as digits as its factorization.

20111200100011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20111200100011 its reverse (11000100211102), we get a palindrome (31111300311113).

The spelling of 20111200100011 in words is "twenty trillion, one hundred eleven billion, two hundred million, one hundred thousand, eleven".