2271274721 has 2 divisors, whose sum is σ = 2271274722. Its totient is φ = 2271274720.

The previous prime is 2271274703. The next prime is 2271274777. The reversal of 2271274721 is 1274721722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1839466321 + 431808400 = 42889^2 + 20780^2 .

It is a cyclic number.

It is not a de Polignac number, because 2271274721 - 2¹⁸ = 2271012577 is a prime.

It is not a weakly prime, because it can be changed into another prime (2271274021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1135637360 + 1135637361.

It is an arithmetic number, because the mean of its divisors is an integer number (1135637361).

Almost surely, 2^2271274721 is an apocalyptic number.

It is an amenable number.

2271274721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2271274721 is an equidigital number, since it uses as much as digits as its factorization.

2271274721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21952, while the sum is 35.

The square root of 2271274721 is about 47657.8925362841. The cubic root of 2271274721 is about 1314.4877880978.

The spelling of 2271274721 in words is "two billion, two hundred seventy-one million, two hundred seventy-four thousand, seven hundred twenty-one".