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20200201201 = 128509157189
BaseRepresentation
bin10010110100000001…
…101001101111110001
31221010210020112200001
4102310001221233301
5312332222414301
613140240230001
71313402606605
oct226401515761
957123215601
1020200201201
11862653a164
123ab900b301
131b9c00269b
14d98b1b505
157d3614c01
hex4b4069bf1

20200201201 has 4 divisors (see below), whose sum is σ = 20200486900. Its totient is φ = 20199915504.

The previous prime is 20200201127. The next prime is 20200201211. The reversal of 20200201201 is 10210200202.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 12961594801 + 7238606400 = 113849^2 + 85080^2 .

It is a cyclic number.

It is not a de Polignac number, because 20200201201 - 217 = 20200070129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20200201211) 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 3 ways as a sum of consecutive naturals, for example, 49915 + ... + 207103.

It is an arithmetic number, because the mean of its divisors is an integer number (5050121725).

Almost surely, 220200201201 is an apocalyptic number.

It is an amenable number.

20200201201 is a deficient number, since it is larger than the sum of its proper divisors (285699).

20200201201 is a wasteful number, since it uses less digits than its factorization.

20200201201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285698.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20200201201 its reverse (10210200202), we get a palindrome (30410401403).

Subtracting from 20200201201 its reverse (10210200202), we obtain a palindrome (9990000999).

The spelling of 20200201201 in words is "twenty billion, two hundred million, two hundred one thousand, two hundred one".

Divisors: 1 128509 157189 20200201201