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12110020220 = 2255910262729
BaseRepresentation
bin10110100011101000…
…00011111001111100
31011020222010202201102
423101310003321330
5144300131121340
65321355432232
7606045321254
oct132164037174
934228122642
1012110020220
115154877481
12241b755678
1311acba614c
1482c49a964
154ad254215
hex2d1d03e7c

12110020220 has 24 divisors (see below), whose sum is σ = 25862079600. Its totient is φ = 4761905792.

The previous prime is 12110020217. The next prime is 12110020229. The reversal of 12110020220 is 2202001121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12110020229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5130185 + ... + 5132544.

It is an arithmetic number, because the mean of its divisors is an integer number (1077586650).

Almost surely, 212110020220 is an apocalyptic number.

12110020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12110020220 is an abundant number, since it is smaller than the sum of its proper divisors (13752059380).

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

12110020220 is a wasteful number, since it uses less digits than its factorization.

12110020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10262797 (or 10262795 counting only the distinct ones).

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

Adding to 12110020220 its reverse (2202001121), we get a palindrome (14312021341).

The spelling of 12110020220 in words is "twelve billion, one hundred ten million, twenty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 59 118 236 295 590 1180 10262729 20525458 41050916 51313645 102627290 205254580 605501011 1211002022 2422004044 3027505055 6055010110 12110020220