227022721 has 2 divisors, whose sum is σ = 227022722. Its totient is φ = 227022720.

The previous prime is 227022661. The next prime is 227022727. The reversal of 227022721 is 127220722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199826496 + 27196225 = 14136^2 + 5215^2 .

It is a cyclic number.

It is not a de Polignac number, because 227022721 - 2¹⁵ = 226989953 is a prime.

It is not a weakly prime, because it can be changed into another prime (227022727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113511360 + 113511361.

It is an arithmetic number, because the mean of its divisors is an integer number (113511361).

Almost surely, 2^227022721 is an apocalyptic number.

It is an amenable number.

227022721 is a deficient number, since it is larger than the sum of its proper divisors (1).

227022721 is an equidigital number, since it uses as much as digits as its factorization.

227022721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 227022721 is about 15067.2731773204. The cubic root of 227022721 is about 610.0373720721.

The spelling of 227022721 in words is "two hundred twenty-seven million, twenty-two thousand, seven hundred twenty-one".