4221331420 has 12 divisors (see below), whose sum is σ = 8864796024. Its totient is φ = 1688532560.

The previous prime is 4221331417. The next prime is 4221331493. The reversal of 4221331420 is 241331224.

It is a junction number, because it is equal to n+sod(n) for n = 4221331391 and 4221331400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105533266 + ... + 105533305.

It is an arithmetic number, because the mean of its divisors is an integer number (738733002).

Almost surely, 2^4221331420 is an apocalyptic number.

It is an amenable number.

4221331420 is an abundant number, since it is smaller than the sum of its proper divisors (4643464604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4221331420 is a wasteful number, since it uses less digits than its factorization.

4221331420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211066580 (or 211066578 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 4221331420 is about 64971.7740253412. The cubic root of 4221331420 is about 1616.1555207439.

Adding to 4221331420 its reverse (241331224), we get a palindrome (4462662644).

The spelling of 4221331420 in words is "four billion, two hundred twenty-one million, three hundred thirty-one thousand, four hundred twenty".