4223402021 has 8 divisors (see below), whose sum is σ = 4473069120. Its totient is φ = 3973871808.

The previous prime is 4223402011. The next prime is 4223402041. The reversal of 4223402021 is 1202043224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4223402021 - 2⁶ = 4223401957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4223401984 and 4223402002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4223402011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33110 + ... + 97688.

It is an arithmetic number, because the mean of its divisors is an integer number (559133640).

Almost surely, 2^4223402021 is an apocalyptic number.

It is an amenable number.

4223402021 is a deficient number, since it is larger than the sum of its proper divisors (249667099).

4223402021 is a wasteful number, since it uses less digits than its factorization.

4223402021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68443.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 4223402021 is about 64987.7066913428. The cubic root of 4223402021 is about 1616.4197238199.

Adding to 4223402021 its reverse (1202043224), we get a palindrome (5425445245).

The spelling of 4223402021 in words is "four billion, two hundred twenty-three million, four hundred two thousand, twenty-one".