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12201010220 = 2257531644341
BaseRepresentation
bin10110101110011110…
…01010010000101100
31011111022100112112102
423113033022100230
5144441424311340
65334405554232
7611231606240
oct132717122054
934438315472
1012201010220
1151a1174623
122446115978
1311c59b3899
1483a5c4420
154b6229215
hex2d73ca42c

12201010220 has 48 divisors (see below), whose sum is σ = 29834941248. Its totient is φ = 4104272640.

The previous prime is 12201010219. The next prime is 12201010229. The reversal of 12201010220 is 2201010221.

It is a happy number.

12201010220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12201010229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 814751 + ... + 829590.

It is an arithmetic number, because the mean of its divisors is an integer number (621561276).

Almost surely, 212201010220 is an apocalyptic number.

12201010220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12201010220 is an abundant number, since it is smaller than the sum of its proper divisors (17633931028).

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

12201010220 is a wasteful number, since it uses less digits than its factorization.

12201010220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644410 (or 1644408 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12201010220 its reverse (2201010221), we get a palindrome (14402020441).

Subtracting from 12201010220 its reverse (2201010221), we obtain a palindrome (9999999999).

The spelling of 12201010220 in words is "twelve billion, two hundred one million, ten thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 53 70 106 140 212 265 371 530 742 1060 1484 1855 3710 7420 1644341 3288682 6577364 8221705 11510387 16443410 23020774 32886820 46041548 57551935 87150073 115103870 174300146 230207740 348600292 435750365 610050511 871500730 1220101022 1743001460 2440202044 3050252555 6100505110 12201010220