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2020121220210 = 23568611981437
BaseRepresentation
bin11101011001011000100…
…110111001010001110010
321011010021201110202002020
4131121120212321101302
5231044202013021320
64144010400332310
7265643326024452
oct35313046712162
97133251422066
102020121220210
117098018453a5
1228761a614096
1311865c0a2432
146dabaccbd62
15378346e0940
hex1d6589b9472

2020121220210 has 32 divisors (see below), whose sum is σ = 4848366532032. Its totient is φ = 538690591680.

The previous prime is 2020121220199. The next prime is 2020121220239. The reversal of 2020121220210 is 120221210202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2020121220210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1567612 + ... + 2549048.

It is an arithmetic number, because the mean of its divisors is an integer number (151511454126).

Almost surely, 22020121220210 is an apocalyptic number.

2020121220210 is an abundant number, since it is smaller than the sum of its proper divisors (2828245311822).

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

2020121220210 is a wasteful number, since it uses less digits than its factorization.

2020121220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050058.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2020121220210 its reverse (120221210202), we get a palindrome (2140342430412).

The spelling of 2020121220210 in words is "two trillion, twenty billion, one hundred twenty-one million, two hundred twenty thousand, two hundred ten".

Divisors: 1 2 3 5 6 10 15 30 68611 137222 205833 343055 411666 686110 981437 1029165 1962874 2058330 2944311 4907185 5888622 9814370 14721555 29443110 67337374007 134674748014 202012122021 336686870035 404024244042 673373740070 1010060610105 2020121220210