100209999971 has 2 divisors, whose sum is σ = 100209999972. Its totient is φ = 100209999970.

The previous prime is 100209999941. The next prime is 100209999979. The reversal of 100209999971 is 179999902001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100209999971 - 2³⁴ = 83030130787 is a prime.

It is not a weakly prime, because it can be changed into another prime (100209999979) 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, 50104999985 + 50104999986.

It is an arithmetic number, because the mean of its divisors is an integer number (50104999986).

Almost surely, 2^100209999971 is an apocalyptic number.

100209999971 is a deficient number, since it is larger than the sum of its proper divisors (1).

100209999971 is an equidigital number, since it uses as much as digits as its factorization.

100209999971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 826686, while the sum is 56.

The spelling of 100209999971 in words is "one hundred billion, two hundred nine million, nine hundred ninety-nine thousand, nine hundred seventy-one".