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212012210233 = 974481487769
BaseRepresentation
bin1100010101110011101…
…0011001100000111001
3202021020111101012010201
43011130322121200321
511433200111211413
6241221433242201
721213601024045
oct3053472314071
9667214335121
10212012210233
1181a0640257a
123510a563361
1316cb9b6a595
14a39359b025
1557acd079dd
hex315ce99839

212012210233 has 8 divisors (see below), whose sum is σ = 214246143720. Its totient is φ = 209779261440.

The previous prime is 212012210227. The next prime is 212012210297. The reversal of 212012210233 is 332012210212.

212012210233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5602821904 + 206409388329 = 74852^2 + 454323^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 212012210233 - 213 = 212012202041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212012210233.

It is not an unprimeable number, because it can be changed into a prime (212012210213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190773 + ... + 678541.

It is an arithmetic number, because the mean of its divisors is an integer number (26780767965).

Almost surely, 2212012210233 is an apocalyptic number.

It is an amenable number.

212012210233 is a deficient number, since it is larger than the sum of its proper divisors (2233933487).

212012210233 is an equidigital number, since it uses as much as digits as its factorization.

212012210233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492347.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212012210233 its reverse (332012210212), we get a palindrome (544024420445).

The spelling of 212012210233 in words is "two hundred twelve billion, twelve million, two hundred ten thousand, two hundred thirty-three".

Divisors: 1 97 4481 434657 487769 47313593 2185692889 212012210233