Base | Representation |
---|---|
bin | 10011000001001111… |
… | …11000001010111101 |
3 | 222100121210121010000 |
4 | 21200213320022331 |
5 | 131403004013041 |
6 | 4405121104513 |
7 | 511016035164 |
oct | 114047701275 |
9 | 28317717100 |
10 | 10211001021 |
11 | 436a931221 |
12 | 1b8b788139 |
13 | c69626b50 |
14 | 6cc1aa3db |
15 | 3eb68bbb6 |
hex | 2609f82bd |
10211001021 has 40 divisors (see below), whose sum is σ = 16545230240. Its totient is φ = 6238397088.
The previous prime is 10211001019. The next prime is 10211001113. The reversal of 10211001021 is 12010011201.
It is a happy number.
10211001021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 10211001021 - 21 = 10211001019 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 10211000994 and 10211001012.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (10211001721) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 111486 + ... + 181248.
It is an arithmetic number, because the mean of its divisors is an integer number (413630756).
Almost surely, 210211001021 is an apocalyptic number.
It is an amenable number.
10211001021 is a deficient number, since it is larger than the sum of its proper divisors (6334229219).
10211001021 is a wasteful number, since it uses less digits than its factorization.
10211001021 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 69927 (or 69918 counting only the distinct ones).
The product of its (nonzero) digits is 4, while the sum is 9.
Adding to 10211001021 its reverse (12010011201), we get a palindrome (22221012222).
It can be divided in two parts, 1021100 and 1021, that added together give a square (1022121 = 10112).
The spelling of 10211001021 in words is "ten billion, two hundred eleven million, one thousand, twenty-one".
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