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2020110221 = 17416147513
BaseRepresentation
bin111100001101000…
…0110111110001101
312012210012020021002
41320122012332031
513114122011341
6532241550045
7101026440113
oct17032067615
95183166232
102020110221
11947332788
12484645325
132626989bc
14152411ab3
15bc53629b
hex78686f8d

2020110221 has 16 divisors (see below), whose sum is σ = 2227076208. Its totient is φ = 1824460800.

The previous prime is 2020110203. The next prime is 2020110251. The reversal of 2020110221 is 1220110202.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 612810025 + 1407300196 = 24755^2 + 37514^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020110221 - 214 = 2020093837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020110251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18761 + ... + 66273.

It is an arithmetic number, because the mean of its divisors is an integer number (139192263).

Almost surely, 22020110221 is an apocalyptic number.

It is an amenable number.

2020110221 is a deficient number, since it is larger than the sum of its proper divisors (206965987).

2020110221 is a wasteful number, since it uses less digits than its factorization.

2020110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47632.

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

The square root of 2020110221 is about 44945.6362842935. The cubic root of 2020110221 is about 1264.1298563795.

Adding to 2020110221 its reverse (1220110202), we get a palindrome (3240220423).

The spelling of 2020110221 in words is "two billion, twenty million, one hundred ten thousand, two hundred twenty-one".

Divisors: 1 17 41 61 697 1037 2501 42517 47513 807721 1948033 2898293 33116561 49270981 118830013 2020110221