4630722221 has 2 divisors, whose sum is σ = 4630722222. Its totient is φ = 4630722220.

The previous prime is 4630722209. The next prime is 4630722241. The reversal of 4630722221 is 1222270364.

4630722221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4625904196 + 4818025 = 68014^2 + 2195^2 .

It is a cyclic number.

It is not a de Polignac number, because 4630722221 - 2¹⁰ = 4630721197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4630722241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2315361110 + 2315361111.

It is an arithmetic number, because the mean of its divisors is an integer number (2315361111).

Almost surely, 2^4630722221 is an apocalyptic number.

It is an amenable number.

4630722221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4630722221 is an equidigital number, since it uses as much as digits as its factorization.

4630722221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 4630722221 is about 68049.4101443943. The cubic root of 4630722221 is about 1666.7977673184.

Adding to 4630722221 its reverse (1222270364), we get a palindrome (5852992585).

The spelling of 4630722221 in words is "four billion, six hundred thirty million, seven hundred twenty-two thousand, two hundred twenty-one".