| Base | Representation |
|---|---|
| bin | 111000011001101111… |
| … | …1101010010110001100 |
| 3 | 102120122021100001101000 |
| 4 | 1300303133222112030 |
| 5 | 3441024443202340 |
| 6 | 131350530420300 |
| 7 | 11515353462444 |
| oct | 1606337522614 |
| 9 | 376567301330 |
| 10 | 121123022220 |
| 11 | 47405874362 |
| 12 | 1b583a31690 |
| 13 | b563a68c65 |
| 14 | 5c10559124 |
| 15 | 323d887d30 |
| hex | 1c337ea58c |
121123022220 has 384 divisors, whose sum is σ = 408719001600. Its totient is φ = 29666304000.
The previous prime is 121123022179. The next prime is 121123022221. The reversal of 121123022220 is 22220321121.
121123022220 is a `hidden beast` number, since 1 + 211 + 230 + 2 + 2 + 220 = 666.
It is a super-2 number, since 2×1211230222202 (a number of 23 digits) contains 22 as substring.
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 = 121123022193 and 121123022202.
It is not an unprimeable number, because it can be changed into a prime (121123022221) by changing a digit.
It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 81783880 + ... + 81785360.
It is an arithmetic number, because the mean of its divisors is an integer number (1064372400).
Almost surely, 2121123022220 is an apocalyptic number.
121123022220 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 121123022220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204359500800).
121123022220 is an abundant number, since it is smaller than the sum of its proper divisors (287595979380).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
121123022220 is a wasteful number, since it uses less digits than its factorization.
121123022220 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1726 (or 1718 counting only the distinct ones).
The product of its (nonzero) digits is 192, while the sum is 18.
Adding to 121123022220 its reverse (22220321121), we get a palindrome (143343343341).
The spelling of 121123022220 in words is "one hundred twenty-one billion, one hundred twenty-three million, twenty-two thousand, two hundred twenty".
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