4021204021 has 8 divisors (see below), whose sum is σ = 4258344960. Its totient is φ = 3784129728.

The previous prime is 4021204007. The next prime is 4021204037. The reversal of 4021204021 is 1204021204.

4021204021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4021204021 is a prime.

It is a super-3 number, since 3×4021204021³ (a number of 30 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4021203986 and 4021204004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021204721) 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, 163020 + ... + 186058.

It is an arithmetic number, because the mean of its divisors is an integer number (532293120).

Almost surely, 2^4021204021 is an apocalyptic number.

It is an amenable number.

4021204021 is a deficient number, since it is larger than the sum of its proper divisors (237140939).

4021204021 is a wasteful number, since it uses less digits than its factorization.

4021204021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33323.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 4021204021 is about 63412.9641398350. The cubic root of 4021204021 is about 1590.2010506154.

Adding to 4021204021 its reverse (1204021204), we get a palindrome (5225225225).

The spelling of 4021204021 in words is "four billion, twenty-one million, two hundred four thousand, twenty-one".