Base | Representation |
---|---|
bin | 111000111010001111… |
… | …0011001111110110111 |
3 | 102200110020201102201111 |
4 | 1301310132121332313 |
5 | 4000243040241322 |
6 | 132051033135451 |
7 | 11554362106531 |
oct | 1616436317667 |
9 | 380406642644 |
10 | 122213212087 |
11 | 4791519911a |
12 | 1b828b5a587 |
13 | b6a8893615 |
14 | 5cb5262851 |
15 | 32a4432177 |
hex | 1c74799fb7 |
122213212087 has 2 divisors, whose sum is σ = 122213212088. Its totient is φ = 122213212086.
The previous prime is 122213212081. The next prime is 122213212133. The reversal of 122213212087 is 780212312221.
It is a weak prime.
It is an emirp because it is prime and its reverse (780212312221) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 122213212087 - 219 = 122212687799 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (122213212081) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61106606043 + 61106606044.
It is an arithmetic number, because the mean of its divisors is an integer number (61106606044).
Almost surely, 2122213212087 is an apocalyptic number.
122213212087 is a deficient number, since it is larger than the sum of its proper divisors (1).
122213212087 is an equidigital number, since it uses as much as digits as its factorization.
122213212087 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 5376, while the sum is 31.
The spelling of 122213212087 in words is "one hundred twenty-two billion, two hundred thirteen million, two hundred twelve thousand, eighty-seven".
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