Base | Representation |
---|---|
bin | 111000011111111011… |
… | …0000010000101101110 |
3 | 102121011201012110000010 |
4 | 1300333312002011232 |
5 | 3441441013310410 |
6 | 131423251314050 |
7 | 11523450540042 |
oct | 1607766020556 |
9 | 377151173003 |
10 | 121330213230 |
11 | 47501818aa6 |
12 | 1b6212ab926 |
13 | b5979703a5 |
14 | 5c2dc90022 |
15 | 3251b62c20 |
hex | 1c3fd8216e |
121330213230 has 32 divisors (see below), whose sum is σ = 291522351744. Its totient is φ = 32318074656.
The previous prime is 121330213223. The next prime is 121330213231. The reversal of 121330213230 is 32312033121.
It is a junction number, because it is equal to n+sod(n) for n = 121330213197 and 121330213206.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (121330213231) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2263624 + ... + 2316603.
It is an arithmetic number, because the mean of its divisors is an integer number (9110073492).
Almost surely, 2121330213230 is an apocalyptic number.
121330213230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
121330213230 is an abundant number, since it is smaller than the sum of its proper divisors (170192138514).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
121330213230 is a wasteful number, since it uses less digits than its factorization.
121330213230 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4581120.
The product of its (nonzero) digits is 648, while the sum is 21.
Adding to 121330213230 its reverse (32312033121), we get a palindrome (153642246351).
The spelling of 121330213230 in words is "one hundred twenty-one billion, three hundred thirty million, two hundred thirteen thousand, two hundred thirty".
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