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2020101121220 = 2257131109945671
BaseRepresentation
bin11101011001010111011…
…010001110010011000100
321011010020022122121110012
4131121113122032103010
5231044131341334340
64144004401445352
7265642663134020
oct35312732162304
97133208577405
102020101121220
117097a1467766
12287613940858
13118657b85c40
146dab8379380
1537832a70565
hex1d65768e4c4

2020101121220 has 48 divisors (see below), whose sum is σ = 5221184441088. Its totient is φ = 639328705920.

The previous prime is 2020101121151. The next prime is 2020101121243. The reversal of 2020101121220 is 221211010202.

It is a super-2 number, since 2×20201011212202 (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 2020101121195 and 2020101121204.

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, 554971016 + ... + 554974655.

It is an arithmetic number, because the mean of its divisors is an integer number (108774675856).

Almost surely, 22020101121220 is an apocalyptic number.

2020101121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020101121220 is an abundant number, since it is smaller than the sum of its proper divisors (3201083319868).

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

2020101121220 is a wasteful number, since it uses less digits than its factorization.

2020101121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109945700 (or 1109945698 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2020101121220 its reverse (221211010202), we get a palindrome (2241312131422).

The spelling of 2020101121220 in words is "two trillion, twenty billion, one hundred one million, one hundred twenty-one thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 13 14 20 26 28 35 52 65 70 91 130 140 182 260 364 455 910 1820 1109945671 2219891342 4439782684 5549728355 7769619697 11099456710 14429293723 15539239394 22198913420 28858587446 31078478788 38848098485 57717174892 72146468615 77696196970 101005056061 144292937230 155392393940 202010112122 288585874460 404020224244 505025280305 1010050560610 2020101121220