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12132013012 = 22721114332
BaseRepresentation
bin10110100110001111…
…11101001111010100
31011022111112010011021
423103013331033110
5144321243404022
65323503050524
7606433260220
oct132307751724
934274463137
1012132013012
115166228a39
122426ba0a44
1311b4606632
14831383780
154b014a7c7
hex2d31fd3d4

12132013012 has 36 divisors (see below), whose sum is σ = 24396045856. Its totient is φ = 5171181120.

The previous prime is 12132013009. The next prime is 12132013013. The reversal of 12132013012 is 21031023121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12132013013) 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, 8465448 + ... + 8466880.

Almost surely, 212132013012 is an apocalyptic number.

It is an amenable number.

12132013012 is an abundant number, since it is smaller than the sum of its proper divisors (12264032844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12132013012 is an equidigital number, since it uses as much as digits as its factorization.

12132013012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3088 (or 1653 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12132013012 its reverse (21031023121), we get a palindrome (33163036133).

The spelling of 12132013012 in words is "twelve billion, one hundred thirty-two million, thirteen thousand, twelve".

Divisors: 1 2 4 7 14 28 211 422 844 1433 1477 2866 2954 5732 5908 10031 20062 40124 302363 604726 1209452 2053489 2116541 4106978 4233082 8213956 8466164 14374423 28748846 57497692 433286179 866572358 1733144716 3033003253 6066006506 12132013012