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1641212201 is a prime number
BaseRepresentation
bin110000111010010…
…1110100100101001
311020101020012220002
41201310232210221
511330122242301
6430504512345
755446034136
oct14164564451
94211205802
101641212201
11772470022
1239977b6b5
132020352a5
14117d8158d
159914016b
hex61d2e929

1641212201 has 2 divisors, whose sum is σ = 1641212202. Its totient is φ = 1641212200.

The previous prime is 1641212171. The next prime is 1641212213. The reversal of 1641212201 is 1022121461.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1247784976 + 393427225 = 35324^2 + 19835^2 .

It is a cyclic number.

It is not a de Polignac number, because 1641212201 - 210 = 1641211177 is a prime.

It is a super-2 number, since 2×16412122012 = 5387154977422528802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1641212291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820606100 + 820606101.

It is an arithmetic number, because the mean of its divisors is an integer number (820606101).

Almost surely, 21641212201 is an apocalyptic number.

It is an amenable number.

1641212201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1641212201 is an equidigital number, since it uses as much as digits as its factorization.

1641212201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 1641212201 is about 40511.8772830882. The cubic root of 1641212201 is about 1179.5641886252.

Adding to 1641212201 its reverse (1022121461), we get a palindrome (2663333662).

The spelling of 1641212201 in words is "one billion, six hundred forty-one million, two hundred twelve thousand, two hundred one".