11001020999971 has 2 divisors, whose sum is σ = 11001020999972. Its totient is φ = 11001020999970.

The previous prime is 11001020999963. The next prime is 11001021000023. The reversal of 11001020999971 is 17999902010011.

11001020999971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11001020999971 - 2³ = 11001020999963 is a prime.

It is not a weakly prime, because it can be changed into another prime (11001020996971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500510499985 + 5500510499986.

It is an arithmetic number, because the mean of its divisors is an integer number (5500510499986).

Almost surely, 2^{11001020999971} is an apocalyptic number.

11001020999971 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001020999971 is an equidigital number, since it uses as much as digits as its factorization.

11001020999971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 49.

The spelling of 11001020999971 in words is "eleven trillion, one billion, twenty million, nine hundred ninety-nine thousand, nine hundred seventy-one".