Search a number
100111111101 = 3213177844157
BaseRepresentation
bin101110100111100010…
…1100101001110111101
3100120101220201101000200
41131033011211032331
53120011421023401
6113553532314113
710142563255401
oct1351705451675
9316356641020
10100111111101
1139503126561
121749b012939
139595843761
144bb9b05101
15290dd86686
hex174f1653bd

100111111101 has 12 divisors (see below), whose sum is σ = 144616083612. Its totient is φ = 66735596736.

The previous prime is 100111111081. The next prime is 100111111103. The reversal of 100111111101 is 101111111001.

Adding to 100111111101 its reverse (101111111001), we get a palindrome (201222222102).

It can be divided in two parts, 10011 and 1111101, that multiplied together give a palindrome (11123232111).

It can be written as a sum of positive squares in 2 ways, for example, as 60361119225 + 39749991876 = 245685^2 + 199374^2 .

It is not a de Polignac number, because 100111111101 - 211 = 100111109053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100111111103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 303486 + ... + 540671.

It is an arithmetic number, because the mean of its divisors is an integer number (12051340301).

Almost surely, 2100111111101 is an apocalyptic number.

It is an amenable number.

100111111101 is a deficient number, since it is larger than the sum of its proper divisors (44504972511).

100111111101 is a wasteful number, since it uses less digits than its factorization.

100111111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857340 (or 857337 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

The spelling of 100111111101 in words is "one hundred billion, one hundred eleven million, one hundred eleven thousand, one hundred one".