Base | Representation |
---|---|
bin | 10100101011001111… |
… | …11100101101110111 |
3 | 1001122121000012101012 |
4 | 22111213330231313 |
5 | 140213123241322 |
6 | 5033244022435 |
7 | 542034150236 |
oct | 122547745567 |
9 | 31577005335 |
10 | 11100212087 |
11 | 47868646a8 |
12 | 2199531a1b |
13 | 107b913843 |
14 | 774318b1d |
15 | 44e786ae2 |
hex | 2959fcb77 |
11100212087 has 2 divisors, whose sum is σ = 11100212088. Its totient is φ = 11100212086.
The previous prime is 11100212077. The next prime is 11100212141. The reversal of 11100212087 is 78021200111.
It is a weak prime.
It is an emirp because it is prime and its reverse (78021200111) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 11100212087 - 212 = 11100207991 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (11100212017) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550106043 + 5550106044.
It is an arithmetic number, because the mean of its divisors is an integer number (5550106044).
Almost surely, 211100212087 is an apocalyptic number.
11100212087 is a deficient number, since it is larger than the sum of its proper divisors (1).
11100212087 is an equidigital number, since it uses as much as digits as its factorization.
11100212087 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 224, while the sum is 23.
Adding to 11100212087 its reverse (78021200111), we get a palindrome (89121412198).
The spelling of 11100212087 in words is "eleven billion, one hundred million, two hundred twelve thousand, eighty-seven".
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