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12020211300 = 22352192108809
BaseRepresentation
bin10110011000111010…
…11101111001100100
31011000201011000001010
423030131131321210
5144104133230200
65304430502220
7603605052546
oct131435357144
934021130033
1012020211300
115109106729
1223b5664970
1311973c0186
1482059d696
154a5414150
hex2cc75de64

12020211300 has 72 divisors (see below), whose sum is σ = 36608941600. Its totient is φ = 3036683520.

The previous prime is 12020211257. The next prime is 12020211311. The reversal of 12020211300 is 311202021.

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

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 23 ways as a sum of consecutive naturals, for example, 1048705 + ... + 1060104.

Almost surely, 212020211300 is an apocalyptic number.

12020211300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020211300 is an abundant number, since it is smaller than the sum of its proper divisors (24588730300).

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

12020211300 is a wasteful number, since it uses less digits than its factorization.

12020211300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2108845 (or 2108838 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 12020211300 its reverse (311202021), we get a palindrome (12331413321).

The spelling of 12020211300 in words is "twelve billion, twenty million, two hundred eleven thousand, three hundred".

Divisors: 1 2 3 4 5 6 10 12 15 19 20 25 30 38 50 57 60 75 76 95 100 114 150 190 228 285 300 380 475 570 950 1140 1425 1900 2850 5700 2108809 4217618 6326427 8435236 10544045 12652854 21088090 25305708 31632135 40067371 42176180 52720225 63264270 80134742 105440450 120202113 126528540 158160675 160269484 200336855 210880900 240404226 316321350 400673710 480808452 601010565 632642700 801347420 1001684275 1202021130 2003368550 2404042260 3005052825 4006737100 6010105650 12020211300