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212012300221 is a prime number
BaseRepresentation
bin1100010101110011101…
…0101111011110111101
3202021020111112202120121
43011130322233132331
511433200122101341
6241221435214541
721213601550311
oct3053472573675
9667214482517
10212012300221
1181a06464147
123510a5a7451
1316cb9b9c527
14a3935c1b41
1557acd244d1
hex315ceaf7bd

212012300221 has 2 divisors, whose sum is σ = 212012300222. Its totient is φ = 212012300220.

The previous prime is 212012300207. The next prime is 212012300239. The reversal of 212012300221 is 122003210212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204655807321 + 7356492900 = 452389^2 + 85770^2 .

It is a cyclic number.

It is not a de Polignac number, because 212012300221 - 25 = 212012300189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212012300195 and 212012300204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212012300251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006150110 + 106006150111.

It is an arithmetic number, because the mean of its divisors is an integer number (106006150111).

Almost surely, 2212012300221 is an apocalyptic number.

It is an amenable number.

212012300221 is a deficient number, since it is larger than the sum of its proper divisors (1).

212012300221 is an equidigital number, since it uses as much as digits as its factorization.

212012300221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 212012300221 its reverse (122003210212), we get a palindrome (334015510433).

Subtracting from 212012300221 its reverse (122003210212), we obtain a palindrome (90009090009).

The spelling of 212012300221 in words is "two hundred twelve billion, twelve million, three hundred thousand, two hundred twenty-one".