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12201002201212 = 221117127712773297
BaseRepresentation
bin1011000110001100010001…
…1001101111000001111100
31121012101220211011212220021
42301203010121233001330
53044400123030414322
641541021340501524
72366331131355646
oct261430431570174
947171824155807
1012201002201212
113984463732670
121450776b4a8a4
136a671b539b16
14302762c21896
1516259935d4c7
hexb18c466f07c

12201002201212 has 48 divisors (see below), whose sum is σ = 24682303564128. Its totient is φ = 5215592222720.

The previous prime is 12201002201207. The next prime is 12201002201221. The reversal of 12201002201212 is 21210220010221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5431453 + ... + 7341844.

It is an arithmetic number, because the mean of its divisors is an integer number (514214657586).

Almost surely, 212201002201212 is an apocalyptic number.

It is an amenable number.

12201002201212 is an abundant number, since it is smaller than the sum of its proper divisors (12481301362916).

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

12201002201212 is a wasteful number, since it uses less digits than its factorization.

12201002201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12774606 (or 12774604 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12201002201212 its reverse (21210220010221), we get a palindrome (33411222211433).

The spelling of 12201002201212 in words is "twelve trillion, two hundred one billion, two million, two hundred one thousand, two hundred twelve".

Divisors: 1 2 4 11 17 22 34 44 68 187 374 748 1277 2554 5108 14047 21709 28094 43418 56188 86836 238799 477598 955196 12773297 25546594 51093188 140506267 217146049 281012534 434292098 562025068 868584196 2388606539 4777213078 9554426156 16311500269 32623000538 65246001076 179426502959 277295504573 358853005918 554591009146 717706011836 1109182018292 3050250550303 6100501100606 12201002201212