Base | Representation |
---|---|
bin | 111000110111011111… |
… | …0111010011000000111 |
3 | 102200012211100010122211 |
4 | 1301232332322120013 |
5 | 4000100443220322 |
6 | 132033542204251 |
7 | 11552162653132 |
oct | 1615676723007 |
9 | 380184303584 |
10 | 122121070087 |
11 | 47878184505 |
12 | 1b802123687 |
13 | b692771723 |
14 | 5ca6d19219 |
15 | 329b2d0b77 |
hex | 1c6efba607 |
122121070087 has 2 divisors, whose sum is σ = 122121070088. Its totient is φ = 122121070086.
The previous prime is 122121070063. The next prime is 122121070109. The reversal of 122121070087 is 780070121221.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 122121070087 - 215 = 122121037319 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (122121074087) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61060535043 + 61060535044.
It is an arithmetic number, because the mean of its divisors is an integer number (61060535044).
Almost surely, 2122121070087 is an apocalyptic number.
122121070087 is a deficient number, since it is larger than the sum of its proper divisors (1).
122121070087 is an equidigital number, since it uses as much as digits as its factorization.
122121070087 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 3136, while the sum is 31.
The spelling of 122121070087 in words is "one hundred twenty-two billion, one hundred twenty-one million, seventy thousand, eighty-seven".
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