Base | Representation |
---|---|
bin | 10110110000110111… |
… | …00010011011000011 |
3 | 1011112201000202102200 |
4 | 23120123202123003 |
5 | 200012041012011 |
6 | 5340403044243 |
7 | 611564026200 |
oct | 133033423303 |
9 | 34481022380 |
10 | 12221032131 |
11 | 52014aa360 |
12 | 2450970683 |
13 | 11c9ba3c79 |
14 | 83d116ca7 |
15 | 4b7d81856 |
hex | 2d86e26c3 |
12221032131 has 72 divisors (see below), whose sum is σ = 23719338864. Its totient is φ = 5975101440.
The previous prime is 12221032099. The next prime is 12221032147. The reversal of 12221032131 is 13123012221.
12221032131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 12221032131 - 25 = 12221032099 is a prime.
It is a super-2 number, since 2×122210321312 (a number of 21 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (12221032171) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8371 + ... + 156563.
It is an arithmetic number, because the mean of its divisors is an integer number (329435262).
Almost surely, 212221032131 is an apocalyptic number.
12221032131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
12221032131 is a deficient number, since it is larger than the sum of its proper divisors (11498306733).
12221032131 is a wasteful number, since it uses less digits than its factorization.
12221032131 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 148241 (or 148231 counting only the distinct ones).
The product of its (nonzero) digits is 144, while the sum is 18.
Adding to 12221032131 its reverse (13123012221), we get a palindrome (25344044352).
The spelling of 12221032131 in words is "twelve billion, two hundred twenty-one million, thirty-two thousand, one hundred thirty-one".
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