| Base | Representation |
|---|---|
| bin | 100001011010001… |
| … | …0100011000001100 |
| 3 | 2220010101021021210 |
| 4 | 1002310110120030 |
| 5 | 4243434324322 |
| 6 | 303123054420 |
| 7 | 36531303156 |
| oct | 10264243014 |
| 9 | 2803337253 |
| 10 | 1121011212 |
| 11 | 525866352 |
| 12 | 273511410 |
| 13 | 14b329459 |
| 14 | a8c4bad6 |
| 15 | 6863670c |
| hex | 42d1460c |
1121011212 has 96 divisors (see below), whose sum is σ = 2888331264. Its totient is φ = 336844800.
The previous prime is 1121011207. The next prime is 1121011273. The reversal of 1121011212 is 2121101211.
It is a super-2 number, since 2×11210112122 = 2513332274859417888, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (12).
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 650512 + ... + 652232.
It is an arithmetic number, because the mean of its divisors is an integer number (30086784).
Almost surely, 21121011212 is an apocalyptic number.
1121011212 is a gapful number since it is divisible by the number (12) 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 1121011212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1444165632).
1121011212 is an abundant number, since it is smaller than the sum of its proper divisors (1767320052).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1121011212 is a wasteful number, since it uses less digits than its factorization.
1121011212 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1879 (or 1877 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 12.
The square root of 1121011212 is about 33481.5055217056. The cubic root of 1121011212 is about 1038.8112687574.
Adding to 1121011212 its reverse (2121101211), we get a palindrome (3242112423).
It can be divided in two parts, 11210 and 11212, that added together give a palindrome (22422).
The spelling of 1121011212 in words is "one billion, one hundred twenty-one million, eleven thousand, two hundred twelve".
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