Base | Representation |
---|---|
bin | 10011101010111110… |
… | …011101001100000010 |
3 | 2000112000222101002011 |
4 | 103222332131030002 |
5 | 321224230011320 |
6 | 13411532043134 |
7 | 1345265655145 |
oct | 235276351402 |
9 | 60460871064 |
10 | 21122110210 |
11 | 8a59976033 |
12 | 41159034aa |
13 | 1cb7cca386 |
14 | 104533c05c |
15 | 83951d05a |
hex | 4eaf9d302 |
21122110210 has 32 divisors (see below), whose sum is σ = 38616269184. Its totient is φ = 8316672000.
The previous prime is 21122110199. The next prime is 21122110277. The reversal of 21122110210 is 1201122112.
It is a super-2 number, since 2×211221102102 (a number of 21 digits) contains 22 as substring.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 431905 + ... + 478315.
It is an arithmetic number, because the mean of its divisors is an integer number (1206758412).
Almost surely, 221122110210 is an apocalyptic number.
21122110210 is a deficient number, since it is larger than the sum of its proper divisors (17494158974).
21122110210 is a wasteful number, since it uses less digits than its factorization.
21122110210 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 47130.
The product of its (nonzero) digits is 16, while the sum is 13.
Adding to 21122110210 its reverse (1201122112), we get a palindrome (22323232322).
The spelling of 21122110210 in words is "twenty-one billion, one hundred twenty-two million, one hundred ten thousand, two hundred ten".
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