4224290921 has 2 divisors, whose sum is σ = 4224290922. Its totient is φ = 4224290920.

The previous prime is 4224290911. The next prime is 4224290947. The reversal of 4224290921 is 1290924224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3920137321 + 304153600 = 62611^2 + 17440^2 .

It is a cyclic number.

It is not a de Polignac number, because 4224290921 - 2³⁰ = 3150549097 is a prime.

It is not a weakly prime, because it can be changed into another prime (4224290911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2112145460 + 2112145461.

It is an arithmetic number, because the mean of its divisors is an integer number (2112145461).

Almost surely, 2^4224290921 is an apocalyptic number.

It is an amenable number.

4224290921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4224290921 is an equidigital number, since it uses as much as digits as its factorization.

4224290921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 4224290921 is about 64994.5453172803. The cubic root of 4224290921 is about 1616.5331185582.

The spelling of 4224290921 in words is "four billion, two hundred twenty-four million, two hundred ninety thousand, nine hundred twenty-one".