Base | Representation |
---|---|
bin | 111000011100101101… |
… | …0011111011101110110 |
3 | 102120220012012102100110 |
4 | 1300321122133131312 |
5 | 3441230404031410 |
6 | 131404435123450 |
7 | 11521000543251 |
oct | 1607132373566 |
9 | 376805172313 |
10 | 121222330230 |
11 | 474569329a1 |
12 | 1b5b1143586 |
13 | b57b4c97b1 |
14 | 5c1d80a098 |
15 | 3247452720 |
hex | 1c3969f776 |
121222330230 has 64 divisors (see below), whose sum is σ = 293723781120. Its totient is φ = 32016180096.
The previous prime is 121222330213. The next prime is 121222330247. The reversal of 121222330230 is 32033222121.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (121222330213) and next prime (121222330247).
It is a junction number, because it is equal to n+sod(n) for n = 121222330197 and 121222330206.
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 31 ways as a sum of consecutive naturals, for example, 9879079 + ... + 9891341.
It is an arithmetic number, because the mean of its divisors is an integer number (4589434080).
Almost surely, 2121222330230 is an apocalyptic number.
121222330230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
121222330230 is an abundant number, since it is smaller than the sum of its proper divisors (172501450890).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
121222330230 is a wasteful number, since it uses less digits than its factorization.
121222330230 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 15405.
The product of its (nonzero) digits is 864, while the sum is 21.
Adding to 121222330230 its reverse (32033222121), we get a palindrome (153255552351).
The spelling of 121222330230 in words is "one hundred twenty-one billion, two hundred twenty-two million, three hundred thirty thousand, two hundred thirty".
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