4225321221 has 16 divisors (see below), whose sum is σ = 6246677568. Its totient is φ = 2518819200.

The previous prime is 4225321211. The next prime is 4225321231. The reversal of 4225321221 is 1221235224.

It is an interprime number because it is at equal distance from previous prime (4225321211) and next prime (4225321231).

It is not a de Polignac number, because 4225321221 - 2⁵ = 4225321189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4225321191 and 4225321200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4225321201) 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 in 15 ways as a sum of consecutive naturals, for example, 1047496 + ... + 1051521.

It is an arithmetic number, because the mean of its divisors is an integer number (390417348).

Almost surely, 2^4225321221 is an apocalyptic number.

It is an amenable number.

4225321221 is a deficient number, since it is larger than the sum of its proper divisors (2021356347).

4225321221 is a wasteful number, since it uses less digits than its factorization.

4225321221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2099092.

The product of its digits is 1920, while the sum is 24.

The square root of 4225321221 is about 65002.4708838056. The cubic root of 4225321221 is about 1616.6645314363.

Adding to 4225321221 its reverse (1221235224), we get a palindrome (5446556445).

The spelling of 4225321221 in words is "four billion, two hundred twenty-five million, three hundred twenty-one thousand, two hundred twenty-one".