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2100111011 = 4745139901
BaseRepresentation
bin111110100101101…
…0010011010100011
312102100201200201022
41331023102122203
513300112023021
6544220400055
7103020435425
oct17513223243
95370650638
102100111011
11988504539
124a73a602b
1327612954b
1415ccb8815
15c458a1ab
hex7d2d26a3

2100111011 has 8 divisors (see below), whose sum is σ = 2145486144. Its totient is φ = 2054764800.

The previous prime is 2100111007. The next prime is 2100111043. The reversal of 2100111011 is 1101110012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2100111011 - 22 = 2100111007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2100111011.

It is not an unprimeable number, because it can be changed into a prime (2100111511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207161 + ... + 217061.

It is an arithmetic number, because the mean of its divisors is an integer number (268185768).

Almost surely, 22100111011 is an apocalyptic number.

2100111011 is a deficient number, since it is larger than the sum of its proper divisors (45375133).

2100111011 is an equidigital number, since it uses as much as digits as its factorization.

2100111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14461.

The product of its (nonzero) digits is 2, while the sum is 8.

The square root of 2100111011 is about 45826.9681628624. The cubic root of 2100111011 is about 1280.6017294111.

Adding to 2100111011 its reverse (1101110012), we get a palindrome (3201221023).

Subtracting from 2100111011 its reverse (1101110012), we obtain a palindrome (999000999).

The spelling of 2100111011 in words is "two billion, one hundred million, one hundred eleven thousand, eleven".

Divisors: 1 47 4513 9901 212111 465347 44683213 2100111011