| Base | Representation |
|---|---|
| bin | 100100011011001… |
| … | …0111000111010000 |
| 3 | 10011011210200221001 |
| 4 | 1020312113013100 |
| 5 | 10000341210000 |
| 6 | 321140111344 |
| 7 | 42200420314 |
| oct | 11066270720 |
| 9 | 3134720831 |
| 10 | 1222210000 |
| 11 | 5779a6510 |
| 12 | 2a1395554 |
| 13 | 16629c7ab |
| 14 | b8471b44 |
| 15 | 7247646a |
| hex | 48d971d0 |
1222210000 has 200 divisors, whose sum is σ = 3319037568. Its totient is φ = 432000000.
The previous prime is 1222209983. The next prime is 1222210007. The reversal of 1222210000 is 122221.
It is a tau number, because it is divible by the number of its divisors (200).
It is a Harshad number since it is a multiple of its sum of digits (10).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1222210007) by changing a digit.
It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4509865 + ... + 4510135.
Almost surely, 21222210000 is an apocalyptic number.
1222210000 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 1222210000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1659518784).
1222210000 is an abundant number, since it is smaller than the sum of its proper divisors (2096827568).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1222210000 is a wasteful number, since it uses less digits than its factorization.
1222210000 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 351 (or 330 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 10.
The square root of 1222210000 is about 34960.1201370934. The cubic root of 1222210000 is about 1069.1745460597.
Adding to 1222210000 its reverse (122221), we get a palindrome (1222332221).
Multiplying 1222210000 by its reverse (122221), we get a square (149379728410000 = 122221002).
1222210000 divided by its reverse (122221) gives a 4-th power (10000 = 104).
It can be divided in two parts, 12222 and 10000, that added together give a palindrome (22222).
The spelling of 1222210000 in words is "one billion, two hundred twenty-two million, two hundred ten thousand".
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