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2010201221 = 72811021963
BaseRepresentation
bin111011111010001…
…0011110010000101
312012002112210200002
41313310103302011
513104102414341
6531245331045
7100546266650
oct16764236205
95162483602
102010201221
11941784a26
12481266a85
132606096a2
14150d92897
15bb72a29b
hex77d13c85

2010201221 has 8 divisors (see below), whose sum is σ = 2305550784. Its totient is φ = 1716896160.

The previous prime is 2010201143. The next prime is 2010201239. The reversal of 2010201221 is 1221020102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2010201221 - 214 = 2010184837 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 (2010291221) 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 7 ways as a sum of consecutive naturals, for example, 509015 + ... + 512948.

It is an arithmetic number, because the mean of its divisors is an integer number (288193848).

Almost surely, 22010201221 is an apocalyptic number.

It is an amenable number.

2010201221 is a deficient number, since it is larger than the sum of its proper divisors (295349563).

2010201221 is a wasteful number, since it uses less digits than its factorization.

2010201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022251.

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

The square root of 2010201221 is about 44835.2676026362. The cubic root of 2010201221 is about 1262.0595403154.

Adding to 2010201221 its reverse (1221020102), we get a palindrome (3231221323).

The spelling of 2010201221 in words is "two billion, ten million, two hundred one thousand, two hundred twenty-one".

Divisors: 1 7 281 1967 1021963 7153741 287171603 2010201221