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212013121260 = 223556915833923
BaseRepresentation
bin1100010101110011110…
…1110111111011101100
3202021020120002110211110
43011130331313323230
511433200324340020
6241221504552020
721213611540103
oct3053475677354
9667216073743
10212013121260
1181a06974a96
123510a922610
1316cba0c9155
14a39375703a
1557ace378e0
hex315cf77eec

212013121260 has 96 divisors (see below), whose sum is σ = 595207388160. Its totient is φ = 56387441152.

The previous prime is 212013121253. The next prime is 212013121261. The reversal of 212013121260 is 62121310212.

It is not an unprimeable number, because it can be changed into a prime (212013121261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54041659 + ... + 54045581.

It is an arithmetic number, because the mean of its divisors is an integer number (6200076960).

Almost surely, 2212013121260 is an apocalyptic number.

212013121260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212013121260 is an abundant number, since it is smaller than the sum of its proper divisors (383194266900).

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

212013121260 is a wasteful number, since it uses less digits than its factorization.

212013121260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6087 (or 6085 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 212013121260 its reverse (62121310212), we get a palindrome (274134431472).

The spelling of 212013121260 in words is "two hundred twelve billion, thirteen million, one hundred twenty-one thousand, two hundred sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 569 1138 1583 1707 2276 2845 3166 3414 3923 4749 5690 6332 6828 7846 7915 8535 9498 11380 11769 15692 15830 17070 18996 19615 23538 23745 31660 34140 39230 47076 47490 58845 78460 94980 117690 235380 900727 1801454 2232187 2702181 3602908 4464374 4503635 5404362 6210109 6696561 8928748 9007270 10808724 11160935 12420218 13393122 13510905 18014540 18630327 22321870 24840436 26786244 27021810 31050545 33482805 37260654 44643740 54043620 62101090 66965610 74521308 93151635 124202180 133931220 186303270 372606540 3533552021 7067104042 10600656063 14134208084 17667760105 21201312126 35335520210 42402624252 53003280315 70671040420 106006560630 212013121260