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12131201012412 = 22328133149108529
BaseRepresentation
bin1011000010001000001111…
…1011010101001010111100
31120221201202020221002201110
42300202003323111022330
53042224144424344122
641444555151042020
72361310320142536
oct260420373251274
946851666832643
1012131201012412
1139578a4791379
12143b136810310
1369cc76351641
142dd22079c856
1516086141e90c
hexb0883ed52bc

12131201012412 has 48 divisors (see below), whose sum is σ = 28407987972000. Its totient is φ = 4029184481280.

The previous prime is 12131201012407. The next prime is 12131201012419. The reversal of 12131201012412 is 21421010213121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131201012419) 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, 111724164 + ... + 111832692.

It is an arithmetic number, because the mean of its divisors is an integer number (591833082750).

Almost surely, 212131201012412 is an apocalyptic number.

12131201012412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12131201012412 is an abundant number, since it is smaller than the sum of its proper divisors (16276786959588).

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

12131201012412 is a wasteful number, since it uses less digits than its factorization.

12131201012412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141966 (or 141964 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 12131201012412 its reverse (21421010213121), we get a palindrome (33552211225533).

The spelling of 12131201012412 in words is "twelve trillion, one hundred thirty-one billion, two hundred one million, twelve thousand, four hundred twelve".

Divisors: 1 2 3 4 6 12 281 562 843 1124 1686 3372 33149 66298 99447 108529 132596 198894 217058 325587 397788 434116 651174 1302348 9314869 18629738 27944607 30496649 37259476 55889214 60993298 91489947 111778428 121986596 182979894 365959788 3597627821 7195255642 10792883463 14390511284 21585766926 43171533852 1010933417701 2021866835402 3032800253103 4043733670804 6065600506206 12131201012412