1000011999971 has 2 divisors, whose sum is σ = 1000011999972. Its totient is φ = 1000011999970.

The previous prime is 1000011999949. The next prime is 1000012000063. The reversal of 1000011999971 is 1799991100001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000011999971 - 2⁶ = 1000011999907 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000011959971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500005999985 + 500005999986.

It is an arithmetic number, because the mean of its divisors is an integer number (500005999986).

Almost surely, 2^{1000011999971} is an apocalyptic number.

1000011999971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000011999971 is an equidigital number, since it uses as much as digits as its factorization.

1000011999971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45927, while the sum is 47.

The spelling of 1000011999971 in words is "one trillion, eleven million, nine hundred ninety-nine thousand, nine hundred seventy-one".