Base | Representation |
---|---|
bin | 111101011001111… |
… | …001111110000101 |
3 | 2122210111122101210 |
4 | 331121321332011 |
5 | 4102212414341 |
6 | 250120442033 |
7 | 34346365050 |
oct | 7531717605 |
9 | 2583448353 |
10 | 1030201221 |
11 | 489581475 |
12 | 249019319 |
13 | 13558292a |
14 | 9ab6da97 |
15 | 60699c16 |
hex | 3d679f85 |
1030201221 has 16 divisors (see below), whose sum is σ = 1575386624. Its totient is φ = 586602864.
The previous prime is 1030201213. The next prime is 1030201247. The reversal of 1030201221 is 1221020301.
It is not a de Polignac number, because 1030201221 - 23 = 1030201213 is a prime.
It is a super-2 number, since 2×10302012212 = 2122629111499781682, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 1030201197 and 1030201206.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1030201721) 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 15 ways as a sum of consecutive naturals, for example, 80731 + ... + 92616.
It is an arithmetic number, because the mean of its divisors is an integer number (98461664).
Almost surely, 21030201221 is an apocalyptic number.
It is an amenable number.
1030201221 is a deficient number, since it is larger than the sum of its proper divisors (545185403).
1030201221 is a wasteful number, since it uses less digits than its factorization.
1030201221 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 173640.
The product of its (nonzero) digits is 24, while the sum is 12.
The square root of 1030201221 is about 32096.7478259091. The cubic root of 1030201221 is about 1009.9673946276.
Adding to 1030201221 its reverse (1221020301), we get a palindrome (2251221522).
The spelling of 1030201221 in words is "one billion, thirty million, two hundred one thousand, two hundred twenty-one".
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