111111110947 has 2 divisors, whose sum is σ = 111111110948. Its totient is φ = 111111110946.

The previous prime is 111111110927. The next prime is 111111111017. The reversal of 111111110947 is 749011111111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111111110947 - 2²⁷ = 110976893219 is a prime.

It is not a weakly prime, because it can be changed into another prime (111111110927) 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, 55555555473 + 55555555474.

It is an arithmetic number, because the mean of its divisors is an integer number (55555555474).

Almost surely, 2^111111110947 is an apocalyptic number.

111111110947 is a deficient number, since it is larger than the sum of its proper divisors (1).

111111110947 is an equidigital number, since it uses as much as digits as its factorization.

111111110947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 28.

The spelling of 111111110947 in words is "one hundred eleven billion, one hundred eleven million, one hundred ten thousand, nine hundred forty-seven".