2775134221 has 2 divisors, whose sum is σ = 2775134222. Its totient is φ = 2775134220.

The previous prime is 2775134209. The next prime is 2775134227. The reversal of 2775134221 is 1224315772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2626562500 + 148571721 = 51250^2 + 12189^2 .

It is a cyclic number.

It is not a de Polignac number, because 2775134221 - 2⁵ = 2775134189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2775134227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1387567110 + 1387567111.

It is an arithmetic number, because the mean of its divisors is an integer number (1387567111).

Almost surely, 2^2775134221 is an apocalyptic number.

It is an amenable number.

2775134221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2775134221 is an equidigital number, since it uses as much as digits as its factorization.

2775134221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520, while the sum is 34.

The square root of 2775134221 is about 52679.5427182127. The cubic root of 2775134221 is about 1405.2750348719.

Adding to 2775134221 its reverse (1224315772), we get a palindrome (3999449993).

The spelling of 2775134221 in words is "two billion, seven hundred seventy-five million, one hundred thirty-four thousand, two hundred twenty-one".