11100111047 has 2 divisors, whose sum is σ = 11100111048. Its totient is φ = 11100111046.

The previous prime is 11100111041. The next prime is 11100111091. The reversal of 11100111047 is 74011100111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11100111047 - 2¹² = 11100106951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11100111041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550055523 + 5550055524.

It is an arithmetic number, because the mean of its divisors is an integer number (5550055524).

Almost surely, 2^11100111047 is an apocalyptic number.

11100111047 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100111047 is an equidigital number, since it uses as much as digits as its factorization.

11100111047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 17.

Adding to 11100111047 its reverse (74011100111), we get a palindrome (85111211158).

The spelling of 11100111047 in words is "eleven billion, one hundred million, one hundred eleven thousand, forty-seven".