Base | Representation |
---|---|
bin | 10011100100100011… |
… | …110010001101010010 |
3 | 2000020112101221001200 |
4 | 103210203302031102 |
5 | 321014200030442 |
6 | 13353124412030 |
7 | 1342520631003 |
oct | 234443621522 |
9 | 60215357050 |
10 | 21014455122 |
11 | 8a04126191 |
12 | 40a5847016 |
13 | 1c9b90643b |
14 | 1034d171aa |
15 | 82ed5534c |
hex | 4e48f2352 |
21014455122 has 24 divisors (see below), whose sum is σ = 45782880780. Its totient is φ = 6966116640.
The previous prime is 21014455093. The next prime is 21014455129. The reversal of 21014455122 is 22155441012.
It is a happy number.
21014455122 is a `hidden beast` number, since 2 + 1 + 0 + 144 + 5 + 512 + 2 = 666.
It can be written as a sum of positive squares in 2 ways, for example, as 18384919281 + 2629535841 = 135591^2 + 51279^2 .
It is not an unprimeable number, because it can be changed into a prime (21014455129) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3221797 + ... + 3228312.
Almost surely, 221014455122 is an apocalyptic number.
21014455122 is an abundant number, since it is smaller than the sum of its proper divisors (24768425658).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21014455122 is a wasteful number, since it uses less digits than its factorization.
21014455122 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6450298 (or 6450295 counting only the distinct ones).
The product of its (nonzero) digits is 3200, while the sum is 27.
Adding to 21014455122 its reverse (22155441012), we get a palindrome (43169896134).
The spelling of 21014455122 in words is "twenty-one billion, fourteen million, four hundred fifty-five thousand, one hundred twenty-two".
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