4066200021 has 16 divisors (see below), whose sum is σ = 5884626944. Its totient is φ = 2482570944.

The previous prime is 4066200007. The next prime is 4066200031. The reversal of 4066200021 is 1200026604.

It is a happy number.

It is not a de Polignac number, because 4066200021 - 2¹¹ = 4066197973 is a prime.

It is a super-2 number, since 2×4066200021² = 33067965221560800882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4066200031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 405526 + ... + 415431.

It is an arithmetic number, because the mean of its divisors is an integer number (367789184).

Almost surely, 2^4066200021 is an apocalyptic number.

It is an amenable number.

4066200021 is a deficient number, since it is larger than the sum of its proper divisors (1818426923).

4066200021 is a wasteful number, since it uses less digits than its factorization.

4066200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821100.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 4066200021 is about 63766.7626667686. The cubic root of 4066200021 is about 1596.1103461843.

Adding to 4066200021 its reverse (1200026604), we get a palindrome (5266226625).

The spelling of 4066200021 in words is "four billion, sixty-six million, two hundred thousand, twenty-one".