Base | Representation |
---|---|
bin | 10001011110111001111… |
… | …000010011101011010101 |
3 | 11020212001122012011010000 |
4 | 101132321320103223111 |
5 | 124140444042434310 |
6 | 2315531104321513 |
7 | 152541112041015 |
oct | 21367170235325 |
9 | 4225048164100 |
10 | 1201414421205 |
11 | 423576135739 |
12 | 174a13313299 |
13 | 893a664552b |
14 | 42212311c45 |
15 | 213b8e7d4c0 |
hex | 117b9e13ad5 |
1201414421205 has 40 divisors (see below), whose sum is σ = 2159329312800. Its totient is φ = 639063631584.
The previous prime is 1201414421153. The next prime is 1201414421213. The reversal of 1201414421205 is 5021244141021.
1201414421205 is a `hidden beast` number, since 1 + 2 + 0 + 1 + 414 + 42 + 1 + 205 = 666.
It is not a de Polignac number, because 1201414421205 - 225 = 1201380866773 is a prime.
It is a super-2 number, since 2×12014144212052 (a number of 25 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3760035 + ... + 4067024.
It is an arithmetic number, because the mean of its divisors is an integer number (53983232820).
Almost surely, 21201414421205 is an apocalyptic number.
1201414421205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
1201414421205 is a deficient number, since it is larger than the sum of its proper divisors (957914891595).
1201414421205 is an equidigital number, since it uses as much as digits as its factorization.
1201414421205 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7827455 (or 7827446 counting only the distinct ones).
The product of its (nonzero) digits is 2560, while the sum is 27.
Adding to 1201414421205 its reverse (5021244141021), we get a palindrome (6222658562226).
The spelling of 1201414421205 in words is "one trillion, two hundred one billion, four hundred fourteen million, four hundred twenty-one thousand, two hundred five".
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