| Base | Representation |
|---|---|
| bin | 111100110111001… |
| … | …110011011111100 |
| 3 | 2122011101202121100 |
| 4 | 330313032123330 |
| 5 | 4042401010022 |
| 6 | 245153533100 |
| 7 | 34206202056 |
| oct | 7467163374 |
| 9 | 2564352540 |
| 10 | 1021110012 |
| 11 | 48443207a |
| 12 | 245b74190 |
| 13 | 13371b910 |
| 14 | 998848d6 |
| 15 | 5e9a11ac |
| hex | 3cdce6fc |
1021110012 has 72 divisors (see below), whose sum is σ = 2790365760. Its totient is φ = 312981120.
The previous prime is 1021110007. The next prime is 1021110017. The reversal of 1021110012 is 2100111201.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (1021110007) and next prime (1021110017).
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a junction number, because it is equal to n+sod(n) for n = 1021109976 and 1021110003.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1021110017) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121837 + ... + 129947.
It is an arithmetic number, because the mean of its divisors is an integer number (38755080).
Almost surely, 21021110012 is an apocalyptic number.
1021110012 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 1021110012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1395182880).
1021110012 is an abundant number, since it is smaller than the sum of its proper divisors (1769255748).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1021110012 is a wasteful number, since it uses less digits than its factorization.
1021110012 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8403 (or 8398 counting only the distinct ones).
The product of its (nonzero) digits is 4, while the sum is 9.
The square root of 1021110012 is about 31954.8120319929. The cubic root of 1021110012 is about 1006.9877285828.
Adding to 1021110012 its reverse (2100111201), we get a palindrome (3121221213).
The spelling of 1021110012 in words is "one billion, twenty-one million, one hundred ten thousand, twelve".
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