Base | Representation |
---|---|
bin | 10010101000001101… |
… | …10101010100110101 |
3 | 221210222200001100122 |
4 | 21110012311110311 |
5 | 130440224341041 |
6 | 4332220221325 |
7 | 502556125310 |
oct | 112406652465 |
9 | 27728601318 |
10 | 10001012021 |
11 | 42723463a0 |
12 | 1b3139a845 |
13 | c34c82cc0 |
14 | 6ac347977 |
15 | 3d800cc4b |
hex | 2541b5535 |
10001012021 has 64 divisors (see below), whose sum is σ = 14002716672. Its totient is φ = 6890400000.
The previous prime is 10001012011. The next prime is 10001012027. The reversal of 10001012021 is 12021010001.
It is not a de Polignac number, because 10001012021 - 210 = 10001010997 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (10001012027) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3132536 + ... + 3135726.
It is an arithmetic number, because the mean of its divisors is an integer number (218792448).
Almost surely, 210001012021 is an apocalyptic number.
10001012021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
It is an amenable number.
10001012021 is a deficient number, since it is larger than the sum of its proper divisors (4001704651).
10001012021 is a wasteful number, since it uses less digits than its factorization.
10001012021 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3354.
The product of its (nonzero) digits is 4, while the sum is 8.
Adding to 10001012021 its reverse (12021010001), we get a palindrome (22022022022).
The spelling of 10001012021 in words is "ten billion, one million, twelve thousand, twenty-one".
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