| Base | Representation |
|---|---|
| bin | 10101101000000110… |
| … | …010001001100001100 |
| 3 | 2012221022222210010200 |
| 4 | 111220012101030030 |
| 5 | 340024123411340 |
| 6 | 14400121133500 |
| 7 | 1451305610613 |
| oct | 255006211414 |
| 9 | 65838883120 |
| 10 | 23221310220 |
| 11 | 9936908079 |
| 12 | 460092a290 |
| 13 | 2260b98064 |
| 14 | 11a405a87a |
| 15 | 90d978330 |
| hex | 56819130c |
23221310220 has 144 divisors (see below), whose sum is σ = 73146108672. Its totient is φ = 5958420480.
The previous prime is 23221310219. The next prime is 23221310221. The reversal of 23221310220 is 2201312232.
23221310220 is a `hidden beast` number, since 232 + 213 + 1 + 0 + 220 = 666.
It is an interprime number because it is at equal distance from previous prime (23221310219) and next prime (23221310221).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 23221310193 and 23221310202.
It is not an unprimeable number, because it can be changed into a prime (23221310221) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 517189 + ... + 560291.
It is an arithmetic number, because the mean of its divisors is an integer number (507959088).
Almost surely, 223221310220 is an apocalyptic number.
23221310220 is a gapful number since it is divisible by the number (20) 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 23221310220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36573054336).
23221310220 is an abundant number, since it is smaller than the sum of its proper divisors (49924798452).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
23221310220 is a wasteful number, since it uses less digits than its factorization.
23221310220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 43232 (or 43227 counting only the distinct ones).
The product of its (nonzero) digits is 288, while the sum is 18.
Adding to 23221310220 its reverse (2201312232), we get a palindrome (25422622452).
The spelling of 23221310220 in words is "twenty-three billion, two hundred twenty-one million, three hundred ten thousand, two hundred twenty".
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