4321425221 has 4 divisors (see below), whose sum is σ = 4321609344. Its totient is φ = 4321241100.

The previous prime is 4321425217. The next prime is 4321425239. The reversal of 4321425221 is 1225241234.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4321425221 - 2² = 4321425217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4321425271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50645 + ... + 105866.

It is an arithmetic number, because the mean of its divisors is an integer number (1080402336).

Almost surely, 2^4321425221 is an apocalyptic number.

It is an amenable number.

4321425221 is a deficient number, since it is larger than the sum of its proper divisors (184123).

4321425221 is a wasteful number, since it uses less digits than its factorization.

4321425221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184122.

The product of its digits is 3840, while the sum is 26.

The square root of 4321425221 is about 65737.5480300262. The cubic root of 4321425221 is about 1628.8296541991.

Adding to 4321425221 its reverse (1225241234), we get a palindrome (5546666455).

The spelling of 4321425221 in words is "four billion, three hundred twenty-one million, four hundred twenty-five thousand, two hundred twenty-one".