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212130201 = 3277397643
BaseRepresentation
bin11001010010011…
…01100110011001
3112210011022221010
430221031212121
5413301131301
633014404133
75154035253
oct1451154631
9483138833
10212130201
11a9818618
125b060649
1334c4363a
142025ccd3
15139535d6
hexca4d999

212130201 has 16 divisors (see below), whose sum is σ = 285018944. Its totient is φ = 140336064.

The previous prime is 212130161. The next prime is 212130229. The reversal of 212130201 is 102031212.

212130201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212130201 - 27 = 212130073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212130271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329586 + ... + 330228.

It is an arithmetic number, because the mean of its divisors is an integer number (17813684).

Almost surely, 2212130201 is an apocalyptic number.

It is an amenable number.

212130201 is a deficient number, since it is larger than the sum of its proper divisors (72888743).

212130201 is a wasteful number, since it uses less digits than its factorization.

212130201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 212130201 is about 14564.6902129774. The cubic root of 212130201 is about 596.3952389794.

Adding to 212130201 its reverse (102031212), we get a palindrome (314161413).

The spelling of 212130201 in words is "two hundred twelve million, one hundred thirty thousand, two hundred one".

Divisors: 1 3 277 397 643 831 1191 1929 109969 178111 255271 329907 534333 765813 70710067 212130201