4622400221 has 2 divisors, whose sum is σ = 4622400222. Its totient is φ = 4622400220.

The previous prime is 4622400193. The next prime is 4622400241. The reversal of 4622400221 is 1220042264.

4622400221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2890675225 + 1731724996 = 53765^2 + 41614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4622400221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4622400241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2311200110 + 2311200111.

It is an arithmetic number, because the mean of its divisors is an integer number (2311200111).

Almost surely, 2^4622400221 is an apocalyptic number.

It is an amenable number.

4622400221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4622400221 is an equidigital number, since it uses as much as digits as its factorization.

4622400221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 4622400221 is about 67988.2359015146. The cubic root of 4622400221 is about 1665.7986856750.

Adding to 4622400221 its reverse (1220042264), we get a palindrome (5842442485).

The spelling of 4622400221 in words is "four billion, six hundred twenty-two million, four hundred thousand, two hundred twenty-one".