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11212101011 = 47923407309
BaseRepresentation
bin10100111000100101…
…10001010110010011
31001221101112202010102
422130102301112103
5140430244213021
65052322123015
7544563200066
oct123422612623
931841482112
1011212101011
114833a36491
12220aab046b
131098b5a8c7
147851228dd
154594d900b
hex29c4b1593

11212101011 has 4 divisors (see below), whose sum is σ = 11235508800. Its totient is φ = 11188693224.

The previous prime is 11212100993. The next prime is 11212101013. The reversal of 11212101011 is 11010121211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11212101011 - 214 = 11212084627 is a prime.

It is a super-2 number, since 2×112121010112 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11212100983 and 11212101001.

It is not an unprimeable number, because it can be changed into a prime (11212101013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11703176 + ... + 11704133.

It is an arithmetic number, because the mean of its divisors is an integer number (2808877200).

Almost surely, 211212101011 is an apocalyptic number.

11212101011 is a deficient number, since it is larger than the sum of its proper divisors (23407789).

11212101011 is an equidigital number, since it uses as much as digits as its factorization.

11212101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23407788.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11212101011 its reverse (11010121211), we get a palindrome (22222222222).

The spelling of 11212101011 in words is "eleven billion, two hundred twelve million, one hundred one thousand, eleven".

Divisors: 1 479 23407309 11212101011