1000891710101 has 2 divisors, whose sum is σ = 1000891710102. Its totient is φ = 1000891710100.

The previous prime is 1000891710061. The next prime is 1000891710187. The reversal of 1000891710101 is 1010171980001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 807796500625 + 193095209476 = 898775^2 + 439426^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000891710101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000891710601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500445855050 + 500445855051.

It is an arithmetic number, because the mean of its divisors is an integer number (500445855051).

Almost surely, 2^{1000891710101} is an apocalyptic number.

It is an amenable number.

1000891710101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000891710101 is an equidigital number, since it uses as much as digits as its factorization.

1000891710101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 29.

The spelling of 1000891710101 in words is "one trillion, eight hundred ninety-one million, seven hundred ten thousand, one hundred one".