Base | Representation |
---|---|
bin | 10001110011000000100… |
… | …011011010100000011101 |
3 | 11022220210001120012200001 |
4 | 101303000203122200131 |
5 | 130014201303034044 |
6 | 2333501120334301 |
7 | 154234052566561 |
oct | 21630043324035 |
9 | 4286701505601 |
10 | 1223001221149 |
11 | 43174333aa74 |
12 | 179038774391 |
13 | 8b4369b3936 |
14 | 4329d2536a1 |
15 | 21c2e18c2d4 |
hex | 11cc08da81d |
1223001221149 has 2 divisors, whose sum is σ = 1223001221150. Its totient is φ = 1223001221148.
The previous prime is 1223001221147. The next prime is 1223001221177. The reversal of 1223001221149 is 9411221003221.
It is an a-pointer prime, because the next prime (1223001221177) can be obtained adding 1223001221149 to its sum of digits (28).
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 766946820025 + 456054401124 = 875755^2 + 675318^2 .
It is a cyclic number.
It is not a de Polignac number, because 1223001221149 - 21 = 1223001221147 is a prime.
Together with 1223001221147, it forms a pair of twin primes.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1223001221147) 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 as a sum of consecutive naturals, namely, 611500610574 + 611500610575.
It is an arithmetic number, because the mean of its divisors is an integer number (611500610575).
Almost surely, 21223001221149 is an apocalyptic number.
It is an amenable number.
1223001221149 is a deficient number, since it is larger than the sum of its proper divisors (1).
1223001221149 is an equidigital number, since it uses as much as digits as its factorization.
1223001221149 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 1728, while the sum is 28.
It can be divided in two parts, 1223001 and 221149, that added together give a triangular number (1444150 = T1699).
The spelling of 1223001221149 in words is "one trillion, two hundred twenty-three billion, one million, two hundred twenty-one thousand, one hundred forty-nine".
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