20111001100111 has 2 divisors, whose sum is σ = 20111001100112. Its totient is φ = 20111001100110.

The previous prime is 20111001100067. The next prime is 20111001100199. The reversal of 20111001100111 is 11100110011102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20111001100111 - 2¹¹ = 20111001098063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20111001107111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055500550055 + 10055500550056.

It is an arithmetic number, because the mean of its divisors is an integer number (10055500550056).

Almost surely, 2^{20111001100111} is an apocalyptic number.

20111001100111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111001100111 is an equidigital number, since it uses as much as digits as its factorization.

20111001100111 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 10.

Adding to 20111001100111 its reverse (11100110011102), we get a palindrome (31211111111213).

The spelling of 20111001100111 in words is "twenty trillion, one hundred eleven billion, one million, one hundred thousand, one hundred eleven".