1100100085 has 16 divisors (see below), whose sum is σ = 1509878016. Its totient is φ = 753769728.

The previous prime is 1100100083. The next prime is 1100100091. The reversal of 1100100085 is 5800010011.

It is a cyclic number.

It is not a de Polignac number, because 1100100085 - 2¹ = 1100100083 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 (1100100083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36349 + ... + 59341.

It is an arithmetic number, because the mean of its divisors is an integer number (94367376).

Almost surely, 2^1100100085 is an apocalyptic number.

It is an amenable number.

1100100085 is a deficient number, since it is larger than the sum of its proper divisors (409777931).

1100100085 is a wasteful number, since it uses less digits than its factorization.

1100100085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24372.

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

The square root of 1100100085 is about 33167.7567073807. The cubic root of 1100100085 is about 1032.3114223115.

Adding to 1100100085 its reverse (5800010011), we get a palindrome (6900110096).

The spelling of 1100100085 in words is "one billion, one hundred million, one hundred thousand, eighty-five".