Base | Representation |
---|---|
bin | 10110100101000100… |
… | …01110011100000010 |
3 | 1011021210220121012222 |
4 | 23102202032130002 |
5 | 144311230400421 |
6 | 5322511051042 |
7 | 606253223342 |
oct | 132242163402 |
9 | 34253817188 |
10 | 12122121986 |
11 | 5160692737 |
12 | 2423810a82 |
13 | 11b2552560 |
14 | 82dd2ad22 |
15 | 4ae344cab |
hex | 2d288e702 |
12122121986 has 16 divisors (see below), whose sum is σ = 20433276864. Its totient is φ = 5351571984.
The previous prime is 12122121953. The next prime is 12122121989. The reversal of 12122121986 is 68912122121.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (12122121989) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10134956 + ... + 10136151.
It is an arithmetic number, because the mean of its divisors is an integer number (1277079804).
Almost surely, 212122121986 is an apocalyptic number.
12122121986 is a deficient number, since it is larger than the sum of its proper divisors (8311154878).
12122121986 is a wasteful number, since it uses less digits than its factorization.
12122121986 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 20271145.
The product of its digits is 6912, while the sum is 35.
The spelling of 12122121986 in words is "twelve billion, one hundred twenty-two million, one hundred twenty-one thousand, nine hundred eighty-six".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.066 sec. • engine limits •