| Base | Representation |
|---|---|
| bin | 101010110001… |
| … | …100110100100 |
| 3 | 210002200122110 |
| 4 | 222301212210 |
| 5 | 10332310340 |
| 6 | 1040201020 |
| 7 | 164211414 |
| oct | 52614644 |
| 9 | 23080573 |
| 10 | 11213220 |
| 11 | 6369727 |
| 12 | 3909170 |
| 13 | 2427b55 |
| 14 | 16bc644 |
| 15 | eb7680 |
| hex | ab19a4 |
11213220 has 48 divisors (see below), whose sum is σ = 32251968. Its totient is φ = 2908800.
The previous prime is 11213219. The next prime is 11213221. The reversal of 11213220 is 2231211.
It is an interprime number because it is at equal distance from previous prime (11213219) and next prime (11213221).
It is a Harshad number since it is a multiple of its sum of digits (12).
It is a junction number, because it is equal to n+sod(n) for n = 11213196 and 11213205.
It is not an unprimeable number, because it can be changed into a prime (11213221) by changing a digit.
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 15 ways as a sum of consecutive naturals, for example, 306 + ... + 4745.
It is an arithmetic number, because the mean of its divisors is an integer number (671916).
Almost surely, 211213220 is an apocalyptic number.
11213220 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 11213220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16125984).
11213220 is an abundant number, since it is smaller than the sum of its proper divisors (21038748).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11213220 is a wasteful number, since it uses less digits than its factorization.
11213220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5100 (or 5098 counting only the distinct ones).
The product of its (nonzero) digits is 24, while the sum is 12.
The square root of 11213220 is about 3348.6146389216. The cubic root of 11213220 is about 223.8257839689.
Adding to 11213220 its reverse (2231211), we get a palindrome (13444431).
Subtracting from 11213220 its reverse (2231211), we obtain a square (8982009 = 29972).
The spelling of 11213220 in words is "eleven million, two hundred thirteen thousand, two hundred twenty".
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