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200201021220 = 223517196275511
BaseRepresentation
bin1011101001110011101…
…0010010011100100100
3201010202100112121202210
42322130322102130210
511240002430134340
6231545430403420
720315111413464
oct2723472223444
9633670477683
10200201021220
11779a5291442
1232972b00570
1315b56b73245
149992a8bba4
15531ae31180
hex2e9ce92724

200201021220 has 48 divisors (see below), whose sum is σ = 593537148288. Its totient is φ = 50246530560.

The previous prime is 200201021201. The next prime is 200201021233. The reversal of 200201021220 is 22120102002.

200201021220 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 200201021196 and 200201021205.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 98136736 + ... + 98138775.

It is an arithmetic number, because the mean of its divisors is an integer number (12365357256).

Almost surely, 2200201021220 is an apocalyptic number.

200201021220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200201021220 is an abundant number, since it is smaller than the sum of its proper divisors (393336127068).

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

200201021220 is a wasteful number, since it uses less digits than its factorization.

200201021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196275540 (or 196275538 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 200201021220 its reverse (22120102002), we get a palindrome (222321123222).

The spelling of 200201021220 in words is "two hundred billion, two hundred one million, twenty-one thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 17 20 30 34 51 60 68 85 102 170 204 255 340 510 1020 196275511 392551022 588826533 785102044 981377555 1177653066 1962755110 2355306132 2944132665 3336683687 3925510220 5888265330 6673367374 10010051061 11776530660 13346734748 16683418435 20020102122 33366836870 40040204244 50050255305 66733673740 100100510610 200201021220