2771223811 has 2 divisors, whose sum is σ = 2771223812. Its totient is φ = 2771223810.

The previous prime is 2771223809. The next prime is 2771223913. The reversal of 2771223811 is 1183221772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2771223811 - 2¹ = 2771223809 is a prime.

Together with 2771223809, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2771221811) 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, 1385611905 + 1385611906.

It is an arithmetic number, because the mean of its divisors is an integer number (1385611906).

Almost surely, 2^2771223811 is an apocalyptic number.

2771223811 is a deficient number, since it is larger than the sum of its proper divisors (1).

2771223811 is an equidigital number, since it uses as much as digits as its factorization.

2771223811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9408, while the sum is 34.

The square root of 2771223811 is about 52642.4145627839. The cubic root of 2771223811 is about 1404.6146722601.

The spelling of 2771223811 in words is "two billion, seven hundred seventy-one million, two hundred twenty-three thousand, eight hundred eleven".