Base | Representation |
---|---|
bin | 10110100110010010… |
… | …00011100110100100 |
3 | 1011022112001202111122 |
4 | 23103021003212210 |
5 | 144321332114340 |
6 | 5323513153112 |
7 | 606435600404 |
oct | 132311034644 |
9 | 34275052448 |
10 | 12132301220 |
11 | 5166405526 |
12 | 24270bb798 |
13 | 11b46a7880 |
14 | 83141a804 |
15 | 4b01a5db5 |
hex | 2d32439a4 |
12132301220 has 48 divisors (see below), whose sum is σ = 28075776960. Its totient is φ = 4375437696.
The previous prime is 12132301189. The next prime is 12132301229. The reversal of 12132301220 is 2210323121.
It is not an unprimeable number, because it can be changed into a prime (12132301229) 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, 531410 + ... + 553769.
It is an arithmetic number, because the mean of its divisors is an integer number (584912020).
Almost surely, 212132301220 is an apocalyptic number.
12132301220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
12132301220 is an abundant number, since it is smaller than the sum of its proper divisors (15943475740).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12132301220 is a wasteful number, since it uses less digits than its factorization.
12132301220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1085244 (or 1085242 counting only the distinct ones).
The product of its (nonzero) digits is 144, while the sum is 17.
Adding to 12132301220 its reverse (2210323121), we get a palindrome (14342624341).
The spelling of 12132301220 in words is "twelve billion, one hundred thirty-two million, three hundred one thousand, two hundred twenty".
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