101111111009947 has 2 divisors, whose sum is σ = 101111111009948. Its totient is φ = 101111111009946.

The previous prime is 101111111009929. The next prime is 101111111009971. The reversal of 101111111009947 is 749900111111101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101111111009947 - 2²⁷ = 101110976792219 is a prime.

It is not a weakly prime, because it can be changed into another prime (101111111009917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50555555504973 + 50555555504974.

It is an arithmetic number, because the mean of its divisors is an integer number (50555555504974).

Almost surely, 2^{101111111009947} is an apocalyptic number.

101111111009947 is a deficient number, since it is larger than the sum of its proper divisors (1).

101111111009947 is an equidigital number, since it uses as much as digits as its factorization.

101111111009947 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 101111111009947 in words is "one hundred one trillion, one hundred eleven billion, one hundred eleven million, nine thousand, nine hundred forty-seven".