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12000120220 = 2251154546001
BaseRepresentation
bin10110010110100001…
…10100110110011100
31010222022100021021001
423023100310312130
5144034012321340
65302432120044
7603242224144
oct131320646634
933868307231
1012000120220
1150a8833a30
1223aa996024
1311931a746a
1481ba4d924
154a379629a
hex2cb434d9c

12000120220 has 24 divisors (see below), whose sum is σ = 27491185008. Its totient is φ = 4363680000.

The previous prime is 12000120173. The next prime is 12000120247. The reversal of 12000120220 is 2202100021.

12000120220 is digitally balanced in base 2, because in such base 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 (10).

It is a junction number, because it is equal to n+sod(n) for n = 12000120197 and 12000120206.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 27272781 + ... + 27273220.

It is an arithmetic number, because the mean of its divisors is an integer number (1145466042).

Almost surely, 212000120220 is an apocalyptic number.

12000120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12000120220 is an abundant number, since it is smaller than the sum of its proper divisors (15491064788).

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

12000120220 is a wasteful number, since it uses less digits than its factorization.

12000120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54546021 (or 54546019 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 12000120220 its reverse (2202100021), we get a palindrome (14202220241).

The spelling of 12000120220 in words is "twelve billion, one hundred twenty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 54546001 109092002 218184004 272730005 545460010 600006011 1090920020 1200012022 2400024044 3000030055 6000060110 12000120220