| Base | Representation |
|---|---|
| bin | 111000011100011010… |
| … | …0001111011100010000 |
| 3 | 102120212111022222202000 |
| 4 | 1300320310033130100 |
| 5 | 3441220322144440 |
| 6 | 131403440154000 |
| 7 | 11520516401556 |
| oct | 1607064173420 |
| 9 | 376774288660 |
| 10 | 121212303120 |
| 11 | 47451204427 |
| 12 | 1b5a9908900 |
| 13 | b5793c87ac |
| 14 | 5c1c359bd6 |
| 15 | 3246621730 |
| hex | 1c38d0f710 |
121212303120 has 160 divisors (see below), whose sum is σ = 417724454400. Its totient is φ = 32306605056.
The previous prime is 121212303103. The next prime is 121212303193. The reversal of 121212303120 is 21303212121.
121212303120 is a `hidden beast` number, since 1 + 2 + 121 + 230 + 312 + 0 = 666.
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 = 121212303093 and 121212303102.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4498809 + ... + 4525671.
It is an arithmetic number, because the mean of its divisors is an integer number (2610777840).
Almost surely, 2121212303120 is an apocalyptic number.
121212303120 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 121212303120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208862227200).
121212303120 is an abundant number, since it is smaller than the sum of its proper divisors (296512151280).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
121212303120 is a wasteful number, since it uses less digits than its factorization.
121212303120 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 28974 (or 28962 counting only the distinct ones).
The product of its (nonzero) digits is 144, while the sum is 18.
Adding to 121212303120 its reverse (21303212121), we get a palindrome (142515515241).
Subtracting from 121212303120 its reverse (21303212121), we obtain a palindrome (99909090999).
The spelling of 121212303120 in words is "one hundred twenty-one billion, two hundred twelve million, three hundred three thousand, one hundred twenty".
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