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2020110121 = 3475821643
BaseRepresentation
bin111100001101000…
…0110111100101001
312012210012020010101
41320122012330221
513114122010441
6532241545401
7101026436611
oct17032067451
95183166111
102020110121
119473326a7
12484645261
13262698943
14152411a41
15bc536231
hex78686f29

2020110121 has 4 divisors (see below), whose sum is σ = 2025932112. Its totient is φ = 2014288132.

The previous prime is 2020110097. The next prime is 2020110161. The reversal of 2020110121 is 1210110202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2020110121 - 211 = 2020108073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020110098 and 2020110107.

It is not an unprimeable number, because it can be changed into a prime (2020110161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2910475 + ... + 2911168.

It is an arithmetic number, because the mean of its divisors is an integer number (506483028).

Almost surely, 22020110121 is an apocalyptic number.

It is an amenable number.

2020110121 is a deficient number, since it is larger than the sum of its proper divisors (5821991).

2020110121 is an equidigital number, since it uses as much as digits as its factorization.

2020110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5821990.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2020110121 is about 44945.6351718384. The cubic root of 2020110121 is about 1264.1298355205.

Adding to 2020110121 its reverse (1210110202), we get a palindrome (3230220323).

The spelling of 2020110121 in words is "two billion, twenty million, one hundred ten thousand, one hundred twenty-one".

Divisors: 1 347 5821643 2020110121