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1220213112230 = 257235314299931
BaseRepresentation
bin10001110000011010010…
…111100111110110100110
311022122120202020121020202
4101300122113213312212
5124442444024042410
62332320321430502
7154105006215260
oct21603227476646
94278522217222
101220213112230
11430542544522
1217859aa9b432
138b0b118ac48
14430b6c46b30
1521b19500ca5
hex11c1a5e7da6

1220213112230 has 64 divisors (see below), whose sum is σ = 2668710509568. Its totient is φ = 392618878080.

The previous prime is 1220213112229. The next prime is 1220213112247. The reversal of 1220213112230 is 322113120221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7064636 + ... + 7235295.

It is an arithmetic number, because the mean of its divisors is an integer number (41698601712).

Almost surely, 21220213112230 is an apocalyptic number.

1220213112230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220213112230 is an abundant number, since it is smaller than the sum of its proper divisors (1448497397338).

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

1220213112230 is a wasteful number, since it uses less digits than its factorization.

1220213112230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14300021.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1220213112230 its reverse (322113120221), we get a palindrome (1542326232451).

The spelling of 1220213112230 in words is "one trillion, two hundred twenty billion, two hundred thirteen million, one hundred twelve thousand, two hundred thirty".

Divisors: 1 2 5 7 10 14 23 35 46 53 70 106 115 161 230 265 322 371 530 742 805 1219 1610 1855 2438 3710 6095 8533 12190 17066 42665 85330 14299931 28599862 71499655 100099517 142999310 200199034 328898413 500497585 657796826 757896343 1000995170 1515792686 1644492065 2302288891 3288984130 3789481715 4604577782 5305274401 7578963430 10610548802 11511444455 17431615889 23022888910 26526372005 34863231778 53052744010 87158079445 122021311223 174316158890 244042622446 610106556115 1220213112230