1000010001085 has 4 divisors (see below), whose sum is σ = 1200012001308. Its totient is φ = 800008000864.

The previous prime is 1000010001083. The next prime is 1000010001241. The reversal of 1000010001085 is 5801000100001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 748685250756 + 251324750329 = 865266^2 + 501323^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000010001085 - 2¹ = 1000010001083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000010001083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100001000104 + ... + 100001000113.

It is an arithmetic number, because the mean of its divisors is an integer number (300003000327).

Almost surely, 2^{1000010001085} is an apocalyptic number.

It is an amenable number.

1000010001085 is a deficient number, since it is larger than the sum of its proper divisors (200002000223).

1000010001085 is an equidigital number, since it uses as much as digits as its factorization.

1000010001085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200002000222.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 1000010001085 its reverse (5801000100001), we get a palindrome (6801010101086).

The spelling of 1000010001085 in words is "one trillion, ten million, one thousand, eighty-five".