| Base | Representation |
|---|---|
| bin | 111001011000010011… |
| … | …1100000011111101100 |
| 3 | 102210001120100220111002 |
| 4 | 1302300213200133230 |
| 5 | 4004324342343040 |
| 6 | 132335120015432 |
| 7 | 11621363452640 |
| oct | 1626047403754 |
| 9 | 383046326432 |
| 10 | 123222231020 |
| 11 | 48292811a69 |
| 12 | 1ba6aa61578 |
| 13 | b80993a945 |
| 14 | 5d6d27ac20 |
| 15 | 3312ce5a15 |
| hex | 1cb09e07ec |
123222231020 has 144 divisors (see below), whose sum is σ = 315161054208. Its totient is φ = 39633805440.
The previous prime is 123222231017. The next prime is 123222231023. The reversal of 123222231020 is 20132222321.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (123222231017) and next prime (123222231023).
It is a Harshad number since it is a multiple of its sum of digits (20).
It is a junction number, because it is equal to n+sod(n) for n = 123222230983 and 123222231001.
It is not an unprimeable number, because it can be changed into a prime (123222231023) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5193785 + ... + 5217455.
It is an arithmetic number, because the mean of its divisors is an integer number (2188618432).
Almost surely, 2123222231020 is an apocalyptic number.
123222231020 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 123222231020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157580527104).
123222231020 is an abundant number, since it is smaller than the sum of its proper divisors (191938823188).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
123222231020 is a wasteful number, since it uses less digits than its factorization.
123222231020 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 23828 (or 23807 counting only the distinct ones).
The product of its (nonzero) digits is 576, while the sum is 20.
Adding to 123222231020 its reverse (20132222321), we get a palindrome (143354453341).
The spelling of 123222231020 in words is "one hundred twenty-three billion, two hundred twenty-two million, two hundred thirty-one thousand, twenty".
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