Base | Representation |
---|---|
bin | 10011101111101011… |
… | …110110111011110010 |
3 | 2000201112122112112002 |
4 | 103233223312323302 |
5 | 321404441333020 |
6 | 13423433334002 |
7 | 1350245361266 |
oct | 235753667362 |
9 | 60645575462 |
10 | 21201121010 |
11 | 8a9a531013 |
12 | 4138267302 |
13 | 1ccb4a2424 |
14 | 1051a280a6 |
15 | 841428975 |
hex | 4efaf6ef2 |
21201121010 has 16 divisors (see below), whose sum is σ = 39821236416. Its totient is φ = 8111733168.
The previous prime is 21201120991. The next prime is 21201121093. The reversal of 21201121010 is 1012110212.
It is a junction number, because it is equal to n+sod(n) for n = 21201120982 and 21201121000.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46089164 + ... + 46089623.
It is an arithmetic number, because the mean of its divisors is an integer number (2488827276).
Almost surely, 221201121010 is an apocalyptic number.
21201121010 is a deficient number, since it is larger than the sum of its proper divisors (18620115406).
21201121010 is a wasteful number, since it uses less digits than its factorization.
21201121010 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 92178817.
The product of its (nonzero) digits is 8, while the sum is 11.
Adding to 21201121010 its reverse (1012110212), we get a palindrome (22213231222).
The spelling of 21201121010 in words is "twenty-one billion, two hundred one million, one hundred twenty-one thousand, ten".
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