990100110971 has 2 divisors, whose sum is σ = 990100110972. Its totient is φ = 990100110970.

The previous prime is 990100110947. The next prime is 990100110997. The reversal of 990100110971 is 179011001099.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 990100110971 - 2³⁰ = 989026369147 is a prime.

It is not a weakly prime, because it can be changed into another prime (990100110871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495050055485 + 495050055486.

It is an arithmetic number, because the mean of its divisors is an integer number (495050055486).

Almost surely, 2^990100110971 is an apocalyptic number.

990100110971 is a deficient number, since it is larger than the sum of its proper divisors (1).

990100110971 is an equidigital number, since it uses as much as digits as its factorization.

990100110971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5103, while the sum is 38.

The spelling of 990100110971 in words is "nine hundred ninety billion, one hundred million, one hundred ten thousand, nine hundred seventy-one".