4232220021 has 12 divisors (see below), whose sum is σ = 6204449472. Its totient is φ = 2779367976.

The previous prime is 4232219987. The next prime is 4232220053. The reversal of 4232220021 is 1200222324.

4232220021 is a `hidden beast` number, since 423 + 2 + 220 + 0 + 21 = 666.

It is not a de Polignac number, because 4232220021 - 2¹⁰ = 4232218997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4232219976 and 4232220003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4232720021) 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 11 ways as a sum of consecutive naturals, for example, 3508701 + ... + 3509906.

It is an arithmetic number, because the mean of its divisors is an integer number (517037456).

Almost surely, 2^4232220021 is an apocalyptic number.

It is an amenable number.

4232220021 is a deficient number, since it is larger than the sum of its proper divisors (1972229451).

4232220021 is a wasteful number, since it uses less digits than its factorization.

4232220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7018680 (or 7018677 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 4232220021 is about 65055.5149161084. The cubic root of 4232220021 is about 1617.5439107958.

Adding to 4232220021 its reverse (1200222324), we get a palindrome (5432442345).

The spelling of 4232220021 in words is "four billion, two hundred thirty-two million, two hundred twenty thousand, twenty-one".