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12033201220 = 2251931666319
BaseRepresentation
bin10110011010011110…
…00001010001000100
31011001121120221212021
423031033001101010
5144120444414340
65310013132524
7604123344205
oct131517012104
934047527767
1012033201220
1151154791a7
1223b9a8a144
131199cba911
148221c15ac
154a662ce4a
hex2cd3c1444

12033201220 has 24 divisors (see below), whose sum is σ = 26599708800. Its totient is φ = 4559949792.

The previous prime is 12033201133. The next prime is 12033201241. The reversal of 12033201220 is 2210233021.

It is a junction number, because it is equal to n+sod(n) for n = 12033201194 and 12033201203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15832780 + ... + 15833539.

It is an arithmetic number, because the mean of its divisors is an integer number (1108321200).

Almost surely, 212033201220 is an apocalyptic number.

12033201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12033201220 is an abundant number, since it is smaller than the sum of its proper divisors (14566507580).

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

12033201220 is a wasteful number, since it uses less digits than its factorization.

12033201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31666347 (or 31666345 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12033201220 its reverse (2210233021), we get a palindrome (14243434241).

The spelling of 12033201220 in words is "twelve billion, thirty-three million, two hundred one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 31666319 63332638 126665276 158331595 316663190 601660061 633326380 1203320122 2406640244 3008300305 6016600610 12033201220