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12130201220 = 2257323934763
BaseRepresentation
bin10110100110000010…
…00010111010000100
31011022101010001211212
423103001002322010
5144320312414340
65323400150552
7606412003064
oct132301027204
934271101755
1012130201220
115165200795
122426468458
1311b4120a77
148310313a4
154aeddda65
hex2d3042e84

12130201220 has 48 divisors (see below), whose sum is σ = 25931162880. Its totient is φ = 4765453056.

The previous prime is 12130201201. The next prime is 12130201241. The reversal of 12130201220 is 2210203121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12130201195 and 12130201204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331559 + ... + 366321.

It is an arithmetic number, because the mean of its divisors is an integer number (540232560).

Almost surely, 212130201220 is an apocalyptic number.

12130201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12130201220 is an abundant number, since it is smaller than the sum of its proper divisors (13800961660).

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

12130201220 is a wasteful number, since it uses less digits than its factorization.

12130201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35084 (or 35082 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12130201220 its reverse (2210203121), we get a palindrome (14340404341).

The spelling of 12130201220 in words is "twelve billion, one hundred thirty million, two hundred one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 73 146 239 292 365 478 730 956 1195 1460 2390 4780 17447 34763 34894 69526 69788 87235 139052 173815 174470 347630 348940 695260 2537699 5075398 8308357 10150796 12688495 16616714 25376990 33233428 41541785 50753980 83083570 166167140 606510061 1213020122 2426040244 3032550305 6065100610 12130201220