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BaseRepresentation
bin101110100100010000…
…1111101101111001001
3100120010020201210020022
41131020201331233021
53114300241022420
6113535002510225
710140056263346
oct1351041755711
9316106653208
10100001110985
1139457024876
121746a205375
139578b0b329
144ba926d7cd
1529043a8c25
hex174887dbc9

100001110985 has 4 divisors (see below), whose sum is σ = 120001333188. Its totient is φ = 80000888784.

The previous prime is 100001110969. The next prime is 100001111027. The reversal of 100001110985 is 589011100001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 589011100001 = 1188914954211.

It can be written as a sum of positive squares in 2 ways, for example, as 49076870089 + 50924240896 = 221533^2 + 225664^2 .

It is a cyclic number.

It is not a de Polignac number, because 100001110985 - 24 = 100001110969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10000111094 + ... + 10000111103.

It is an arithmetic number, because the mean of its divisors is an integer number (30000333297).

Almost surely, 2100001110985 is an apocalyptic number.

It is an amenable number.

100001110985 is a deficient number, since it is larger than the sum of its proper divisors (20000222203).

100001110985 is an equidigital number, since it uses as much as digits as its factorization.

100001110985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20000222202.

The product of its (nonzero) digits is 360, while the sum is 26.

Adding to 100001110985 its reverse (589011100001), we get a palindrome (689012210986).

The spelling of 100001110985 in words is "one hundred billion, one million, one hundred ten thousand, nine hundred eighty-five".

Divisors: 1 5 20000222197 100001110985