Base | Representation |
---|---|
bin | 111011111101110… |
… | …1000010100000001 |
3 | 12012020011022011212 |
4 | 1313323220110001 |
5 | 13110100322241 |
6 | 531354415505 |
7 | 100601512001 |
oct | 16773502401 |
9 | 5166138155 |
10 | 2012120321 |
11 | 942875862 |
12 | 481a31595 |
13 | 260b2c053 |
14 | 151332001 |
15 | bb9a8beb |
hex | 77ee8501 |
2012120321 has 4 divisors (see below), whose sum is σ = 2024936532. Its totient is φ = 1999304112.
The previous prime is 2012120263. The next prime is 2012120329. The reversal of 2012120321 is 1230212102.
It is a happy number.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 1160356096 + 851764225 = 34064^2 + 29185^2 .
It is a cyclic number.
It is not a de Polignac number, because 2012120321 - 210 = 2012119297 is a prime.
It is a super-2 number, since 2×20121203212 = 8097256372362286082, which contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 2012120296 and 2012120305.
It is not an unprimeable number, because it can be changed into a prime (2012120329) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6407870 + ... + 6408183.
It is an arithmetic number, because the mean of its divisors is an integer number (506234133).
Almost surely, 22012120321 is an apocalyptic number.
It is an amenable number.
2012120321 is a deficient number, since it is larger than the sum of its proper divisors (12816211).
2012120321 is a wasteful number, since it uses less digits than its factorization.
2012120321 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 12816210.
The product of its (nonzero) digits is 48, while the sum is 14.
The square root of 2012120321 is about 44856.6641760174. The cubic root of 2012120321 is about 1262.4610338070.
Adding to 2012120321 its reverse (1230212102), we get a palindrome (3242332423).
The spelling of 2012120321 in words is "two billion, twelve million, one hundred twenty thousand, three hundred twenty-one".
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