111000999947 has 2 divisors, whose sum is σ = 111000999948. Its totient is φ = 111000999946.

The previous prime is 111000999937. The next prime is 111000999997. The reversal of 111000999947 is 749999000111.

It is a happy number.

It is an a-pointer prime, because the next prime (111000999997) can be obtained adding 111000999947 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111000999947 - 2⁴ = 111000999931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111000999895 and 111000999904.

It is not a weakly prime, because it can be changed into another prime (111000999937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55500499973 + 55500499974.

It is an arithmetic number, because the mean of its divisors is an integer number (55500499974).

Almost surely, 2^111000999947 is an apocalyptic number.

111000999947 is a deficient number, since it is larger than the sum of its proper divisors (1).

111000999947 is an equidigital number, since it uses as much as digits as its factorization.

111000999947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 183708, while the sum is 50.

The spelling of 111000999947 in words is "one hundred eleven billion, nine hundred ninety-nine thousand, nine hundred forty-seven".