| Base | Representation |
|---|---|
| bin | 100100011010110… |
| … | …0011110111111000 |
| 3 | 10011011102001000201 |
| 4 | 1020311203313320 |
| 5 | 10000313000440 |
| 6 | 321131411544 |
| 7 | 42165554365 |
| oct | 11065436770 |
| 9 | 3134361021 |
| 10 | 1222000120 |
| 11 | 577872860 |
| 12 | 2a12b3bb4 |
| 13 | 1662280c3 |
| 14 | b841946c |
| 15 | 7243419a |
| hex | 48d63df8 |
1222000120 has 128 divisors (see below), whose sum is σ = 3314442240. Its totient is φ = 399984640.
The previous prime is 1222000063. The next prime is 1222000127. The reversal of 1222000120 is 210002221.
It is a Harshad number since it is a multiple of its sum of digits (10).
It is a junction number, because it is equal to n+sod(n) for n = 1222000097 and 1222000106.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1222000127) by changing a digit.
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, 168489 + ... + 175591.
It is an arithmetic number, because the mean of its divisors is an integer number (25894080).
Almost surely, 21222000120 is an apocalyptic number.
1222000120 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 1222000120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1657221120).
1222000120 is an abundant number, since it is smaller than the sum of its proper divisors (2092442120).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1222000120 is a wasteful number, since it uses less digits than its factorization.
1222000120 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7165 (or 7161 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 10.
The square root of 1222000120 is about 34957.1183022857. The cubic root of 1222000120 is about 1069.1133423932.
Adding to 1222000120 its reverse (210002221), we get a palindrome (1432002341).
The spelling of 1222000120 in words is "one billion, two hundred twenty-two million, one hundred twenty", and thus it is an aban number.
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