11101111109947 has 2 divisors, whose sum is σ = 11101111109948. Its totient is φ = 11101111109946.

The previous prime is 11101111109939. The next prime is 11101111109999. The reversal of 11101111109947 is 74990111110111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11101111109947 - 2³ = 11101111109939 is a prime.

It is not a weakly prime, because it can be changed into another prime (11101111109927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550555554973 + 5550555554974.

It is an arithmetic number, because the mean of its divisors is an integer number (5550555554974).

Almost surely, 2^{11101111109947} is an apocalyptic number.

11101111109947 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101111109947 is an equidigital number, since it uses as much as digits as its factorization.

11101111109947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 37.

The spelling of 11101111109947 in words is "eleven trillion, one hundred one billion, one hundred eleven million, one hundred nine thousand, nine hundred forty-seven".