Base | Representation |
---|---|
bin | 10011000010011100… |
… | …00110011101010100 |
3 | 222101022122122221210 |
4 | 21201032012131110 |
5 | 131413040133022 |
6 | 4410115541420 |
7 | 511200150036 |
oct | 114116063524 |
9 | 28338578853 |
10 | 10221021012 |
11 | 4375555404 |
12 | 1b92bba870 |
13 | c6b724837 |
14 | 6cd657c56 |
15 | 3ec4baa0c |
hex | 261386754 |
10221021012 has 48 divisors (see below), whose sum is σ = 23953825280. Its totient is φ = 3392075232.
The previous prime is 10221021011. The next prime is 10221021043. The reversal of 10221021012 is 21012012201.
It is a Harshad number since it is a multiple of its sum of digits (12).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (10221021011) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2879823 + ... + 2883369.
Almost surely, 210221021012 is an apocalyptic number.
10221021012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
10221021012 is an abundant number, since it is smaller than the sum of its proper divisors (13732804268).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
10221021012 is a wasteful number, since it uses less digits than its factorization.
10221021012 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4540 (or 4538 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 12.
Adding to 10221021012 its reverse (21012012201), we get a palindrome (31233033213).
The spelling of 10221021012 in words is "ten billion, two hundred twenty-one million, twenty-one thousand, twelve".
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