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2012200112220 = 2235137244793201
BaseRepresentation
bin11101010010000000011…
…110010001000001011100
321010100211200111202200020
4131102000132101001130
5230431441212042340
64140220355432140
7265243123514244
oct35220036210134
97110750452606
102012200112220
11706407561761
12285b898b5650
13117998cc229c
146d568cbcb24
153751e0ca9d0
hex1d48079105c

2012200112220 has 48 divisors (see below), whose sum is σ = 5675285595168. Its totient is φ = 532670003200.

The previous prime is 2012200112201. The next prime is 2012200112261. The reversal of 2012200112220 is 222110022102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2012200112220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122388381 + ... + 122404820.

It is an arithmetic number, because the mean of its divisors is an integer number (118235116566).

Almost surely, 22012200112220 is an apocalyptic number.

2012200112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012200112220 is an abundant number, since it is smaller than the sum of its proper divisors (3663085482948).

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

2012200112220 is a wasteful number, since it uses less digits than its factorization.

2012200112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244793350 (or 244793348 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2012200112220 its reverse (222110022102), we get a palindrome (2234310134322).

The spelling of 2012200112220 in words is "two trillion, twelve billion, two hundred million, one hundred twelve thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 137 274 411 548 685 822 1370 1644 2055 2740 4110 8220 244793201 489586402 734379603 979172804 1223966005 1468759206 2447932010 2937518412 3671898015 4895864020 7343796030 14687592060 33536668537 67073337074 100610005611 134146674148 167683342685 201220011222 335366685370 402440022444 503050028055 670733370740 1006100056110 2012200112220