| Base | Representation |
|---|---|
| bin | 101010110001… |
| … | …010110110100 |
| 3 | 210002122021010 |
| 4 | 222301112310 |
| 5 | 10332242322 |
| 6 | 1040152220 |
| 7 | 164205444 |
| oct | 52612664 |
| 9 | 23078233 |
| 10 | 11212212 |
| 11 | 63689a0 |
| 12 | 3908670 |
| 13 | 242755b |
| 14 | 16bc124 |
| 15 | eb720c |
| hex | ab15b4 |
11212212 has 72 divisors (see below), whose sum is σ = 29850912. Its totient is φ = 3248000.
The previous prime is 11212171. The next prime is 11212219. The reversal of 11212212 is 21221211.
11212212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a Harshad number since it is a multiple of its sum of digits (12).
It is a nude number because it is divisible by every one of its digits.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (11212219) 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, 110962 + ... + 111062.
It is an arithmetic number, because the mean of its divisors is an integer number (414596).
Almost surely, 211212212 is an apocalyptic number.
11212212 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 11212212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14925456).
11212212 is an abundant number, since it is smaller than the sum of its proper divisors (18638700).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11212212 is a wasteful number, since it uses less digits than its factorization.
11212212 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 177 (or 146 counting only the distinct ones).
The product of its digits is 16, while the sum is 12.
The square root of 11212212 is about 3348.4641255358. The cubic root of 11212212 is about 223.8190769108.
Adding to 11212212 its reverse (21221211), we get a palindrome (32433423).
It can be divided in two parts, 1121 and 2212, that added together give a palindrome (3333).
The spelling of 11212212 in words is "eleven million, two hundred twelve thousand, two hundred twelve".
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