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12130313212 = 2217178386959
BaseRepresentation
bin10110100110000010…
…11110001111111100
31011022101022202110201
423103001132033330
5144320330010322
65323402413244
7606412650433
oct132301361774
934271282421
1012130313212
115165277946
122426501224
1311b415ca34
1483106011a
154aee11d27
hex2d305e3fc

12130313212 has 12 divisors (see below), whose sum is σ = 22476756960. Its totient is φ = 5708382656.

The previous prime is 12130313189. The next prime is 12130313213. The reversal of 12130313212 is 21231303121.

It is a self number, because there is not a number n which added to its sum of digits gives 12130313212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12130313213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89193412 + ... + 89193547.

It is an arithmetic number, because the mean of its divisors is an integer number (1873063080).

Almost surely, 212130313212 is an apocalyptic number.

It is an amenable number.

12130313212 is a deficient number, since it is larger than the sum of its proper divisors (10346443748).

12130313212 is a wasteful number, since it uses less digits than its factorization.

12130313212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178386980 (or 178386978 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12130313212 its reverse (21231303121), we get a palindrome (33361616333).

The spelling of 12130313212 in words is "twelve billion, one hundred thirty million, three hundred thirteen thousand, two hundred twelve".

Divisors: 1 2 4 17 34 68 178386959 356773918 713547836 3032578303 6065156606 12130313212