| Base | Representation |
|---|---|
| bin | 1100010110111101010… |
| … | …1001110010010010100 |
| 3 | 202022001000212010100002 |
| 4 | 3011233111032102110 |
| 5 | 11434313213411040 |
| 6 | 241312232510432 |
| 7 | 21224342460152 |
| oct | 3055725162224 |
| 9 | 668030763302 |
| 10 | 212321232020 |
| 11 | 82054889187 |
| 12 | 35195b4b418 |
| 13 | 17038ba6901 |
| 14 | a3c263c3d2 |
| 15 | 57c9ee9a15 |
| hex | 316f54e494 |
212321232020 has 48 divisors (see below), whose sum is σ = 446608890000. Its totient is φ = 84788760576.
The previous prime is 212321232007. The next prime is 212321232037. The reversal of 212321232020 is 20232123212.
It is a happy number.
212321232020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 8 ways, for example, as 3029621764 + 209291610256 = 55042^2 + 457484^2 .
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 = 212321231983 and 212321232001.
It is a congruent number.
It is an unprimeable number.
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 15 ways as a sum of consecutive naturals, for example, 37292294 + ... + 37297986.
It is an arithmetic number, because the mean of its divisors is an integer number (9304351875).
Almost surely, 2212321232020 is an apocalyptic number.
212321232020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
212321232020 is an abundant number, since it is smaller than the sum of its proper divisors (234287657980).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
212321232020 is a wasteful number, since it uses less digits than its factorization.
212321232020 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8444 (or 8442 counting only the distinct ones).
The product of its (nonzero) digits is 576, while the sum is 20.
212321232020 divided by its sum of digits (20) gives a palindrome (10616061601).
Adding to 212321232020 its reverse (20232123212), we get a palindrome (232553355232).
The spelling of 212321232020 in words is "two hundred twelve billion, three hundred twenty-one million, two hundred thirty-two thousand, twenty".
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