| Base | Representation |
|---|---|
| bin | 111000011101000000… |
| … | …0001011100100101100 |
| 3 | 102120220212210101011000 |
| 4 | 1300322000023210230 |
| 5 | 3441240421211340 |
| 6 | 131405431000300 |
| 7 | 11521150533012 |
| oct | 1607200134454 |
| 9 | 376825711130 |
| 10 | 121232210220 |
| 11 | 47461470980 |
| 12 | 1b5b4509090 |
| 13 | b580578844 |
| 14 | 5c20c5c8b2 |
| 15 | 3248254d30 |
| hex | 1c3a00b92c |
121232210220 has 192 divisors, whose sum is σ = 412107655680. Its totient is φ = 29342995200.
The previous prime is 121232210219. The next prime is 121232210221. The reversal of 121232210220 is 22012232121.
121232210220 is a `hidden beast` number, since 1 + 2 + 1 + 232 + 210 + 220 = 666.
It is an interprime number because it is at equal distance from previous prime (121232210219) and next prime (121232210221).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 121232210193 and 121232210202.
It is not an unprimeable number, because it can be changed into a prime (121232210221) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3803550 + ... + 3835290.
It is an arithmetic number, because the mean of its divisors is an integer number (2146394040).
Almost surely, 2121232210220 is an apocalyptic number.
121232210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 121232210220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206053827840).
121232210220 is an abundant number, since it is smaller than the sum of its proper divisors (290875445460).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
121232210220 is a wasteful number, since it uses less digits than its factorization.
121232210220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 32413 (or 32405 counting only the distinct ones).
The product of its (nonzero) digits is 192, while the sum is 18.
Adding to 121232210220 its reverse (22012232121), we get a palindrome (143244442341).
The spelling of 121232210220 in words is "one hundred twenty-one billion, two hundred thirty-two million, two hundred ten thousand, two hundred twenty".
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