2111100111047 has 2 divisors, whose sum is σ = 2111100111048. Its totient is φ = 2111100111046.

The previous prime is 2111100110993. The next prime is 2111100111079. The reversal of 2111100111047 is 7401110011112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111100111047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111100111247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055550055523 + 1055550055524.

It is an arithmetic number, because the mean of its divisors is an integer number (1055550055524).

Almost surely, 2^{2111100111047} is an apocalyptic number.

2111100111047 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111100111047 is an equidigital number, since it uses as much as digits as its factorization.

2111100111047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 20.

Adding to 2111100111047 its reverse (7401110011112), we get a palindrome (9512210122159).

The spelling of 2111100111047 in words is "two trillion, one hundred eleven billion, one hundred million, one hundred eleven thousand, forty-seven".