101010985 has 4 divisors (see below), whose sum is σ = 121213188. Its totient is φ = 80808784.

The previous prime is 101010979. The next prime is 101011013. The reversal of 101010985 is 589010101.

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 76597504 + 24413481 = 8752^2 + 4941^2 .

It is a cyclic number.

It is not a de Polignac number, because 101010985 - 2³ = 101010977 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10101094 + ... + 10101103.

It is an arithmetic number, because the mean of its divisors is an integer number (30303297).

Almost surely, 2^101010985 is an apocalyptic number.

It is an amenable number.

101010985 is a deficient number, since it is larger than the sum of its proper divisors (20202203).

101010985 is an equidigital number, since it uses as much as digits as its factorization.

101010985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20202202.

The product of its (nonzero) digits is 360, while the sum is 25.

The square root of 101010985 is about 10050.4221304381. The cubic root of 101010985 is about 465.7178337490.

The spelling of 101010985 in words is "one hundred one million, ten thousand, nine hundred eighty-five".