| Base | Representation |
|---|---|
| bin | 10110100010011101… |
| … | …01011010100111100 |
| 3 | 1011020021200212122110 |
| 4 | 23101032223110330 |
| 5 | 144240124021340 |
| 6 | 5320405414020 |
| 7 | 605566113654 |
| oct | 132116532474 |
| 9 | 34207625573 |
| 10 | 12100220220 |
| 11 | 514a293600 |
| 12 | 241840a310 |
| 13 | 11aab5462a |
| 14 | 82b069364 |
| 15 | 4ac46a680 |
| hex | 2d13ab53c |
12100220220 has 144 divisors (see below), whose sum is σ = 39431708064. Its totient is φ = 2760806400.
The previous prime is 12100220219. The next prime is 12100220221. The reversal of 12100220220 is 2202200121.
It is an interprime number because it is at equal distance from previous prime (12100220219) and next prime (12100220221).
It is a Harshad number since it is a multiple of its sum of digits (12).
12100220220 is a modest number, since divided by 220220 gives 12100 as remainder.
It is a junction number, because it is equal to n+sod(n) for n = 12100220196 and 12100220205.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12100220221) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74400 + ... + 172440.
It is an arithmetic number, because the mean of its divisors is an integer number (273831306).
Almost surely, 212100220220 is an apocalyptic number.
12100220220 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 12100220220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19715854032).
12100220220 is an abundant number, since it is smaller than the sum of its proper divisors (27331487844).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12100220220 is a wasteful number, since it uses less digits than its factorization.
12100220220 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 98092 (or 98079 counting only the distinct ones).
The product of its (nonzero) digits is 32, while the sum is 12.
Adding to 12100220220 its reverse (2202200121), we get a palindrome (14302420341).
The spelling of 12100220220 in words is "twelve billion, one hundred million, two hundred twenty thousand, two hundred twenty".
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