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13121212302230 = 25191971213288997
BaseRepresentation
bin1011111011110000010100…
…1100101100001110010110
31201110101010211211110210112
42332330011030230032112
53204434220322132410
643523445100523022
72522655605230544
oct276740514541626
951411124743715
1013121212302230
1141a974730348a
12157ab8b550472
1374242c083686
143350da380d94
1517b4a5ca8105
hexbef0532c396

13121212302230 has 64 divisors (see below), whose sum is σ = 25008129812160. Its totient is φ = 4942913601024.

The previous prime is 13121212302197. The next prime is 13121212302251. The reversal of 13121212302230 is 3220321212131.

It is a junction number, because it is equal to n+sod(n) for n = 13121212302196 and 13121212302205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45258092 + ... + 45547088.

It is an arithmetic number, because the mean of its divisors is an integer number (390752028315).

Almost surely, 213121212302230 is an apocalyptic number.

13121212302230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13121212302230 is a deficient number, since it is larger than the sum of its proper divisors (11886917509930).

13121212302230 is a wasteful number, since it uses less digits than its factorization.

13121212302230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290433.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 13121212302230 its reverse (3220321212131), we get a palindrome (16341533514361).

The spelling of 13121212302230 in words is "thirteen trillion, one hundred twenty-one billion, two hundred twelve million, three hundred two thousand, two hundred thirty".

Divisors: 1 2 5 10 19 38 95 190 197 394 985 1213 1970 2426 3743 6065 7486 12130 18715 23047 37430 46094 115235 230470 238961 288997 477922 577994 1194805 1444985 2389610 2889970 4540259 5490943 9080518 10981886 22701295 27454715 45402590 54909430 56932409 113864818 284662045 350553361 569324090 701106722 1081715771 1752766805 2163431542 3505533610 5408578855 6660513859 10817157710 13321027718 33302569295 66605138590 69059012117 138118024234 345295060585 690590121170 1312121230223 2624242460446 6560606151115 13121212302230