| Base | Representation |
|---|---|
| bin | 1100010101110101101… |
| … | …1111101111110010000 |
| 3 | 202021021002221021120212 |
| 4 | 3011131123331332100 |
| 5 | 11433204334312240 |
| 6 | 241222350023252 |
| 7 | 21214035565220 |
| oct | 3053533757620 |
| 9 | 667232837525 |
| 10 | 212021010320 |
| 11 | 81a10373179 |
| 12 | 351114a7b28 |
| 13 | 16cbb92bc32 |
| 14 | a39480c080 |
| 15 | 57ad995165 |
| hex | 315d6fdf90 |
212021010320 has 80 divisors (see below), whose sum is σ = 563809092480. Its totient is φ = 72636275712.
The previous prime is 212021010277. The next prime is 212021010337. The reversal of 212021010320 is 23010120212.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (80).
It is a super-2 number, since 2×2120210103202 (a number of 23 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (14).
It is a junction number, because it is equal to n+sod(n) for n = 212021010295 and 212021010304.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 574979 + ... + 868701.
It is an arithmetic number, because the mean of its divisors is an integer number (7047613656).
Almost surely, 2212021010320 is an apocalyptic number.
212021010320 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 212021010320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281904546240).
212021010320 is an abundant number, since it is smaller than the sum of its proper divisors (351788082160).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
212021010320 is a wasteful number, since it uses less digits than its factorization.
212021010320 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 295032 (or 295026 counting only the distinct ones).
The product of its (nonzero) digits is 48, while the sum is 14.
Adding to 212021010320 its reverse (23010120212), we get a palindrome (235031130532).
The spelling of 212021010320 in words is "two hundred twelve billion, twenty-one million, ten thousand, three hundred twenty".
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