4200200444021 has 4 divisors (see below), whose sum is σ = 4215147776844. Its totient is φ = 4185253111200.

The previous prime is 4200200444017. The next prime is 4200200444047. The reversal of 4200200444021 is 1204440020024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3709379700625 + 490820743396 = 1925975^2 + 700586^2 .

It is a cyclic number.

It is not a de Polignac number, because 4200200444021 - 2² = 4200200444017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4200200444221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7473665990 + ... + 7473666551.

It is an arithmetic number, because the mean of its divisors is an integer number (1053786944211).

Almost surely, 2^{4200200444021} is an apocalyptic number.

It is an amenable number.

4200200444021 is a deficient number, since it is larger than the sum of its proper divisors (14947332823).

4200200444021 is a wasteful number, since it uses less digits than its factorization.

4200200444021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14947332822.

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 4200200444021 its reverse (1204440020024), we get a palindrome (5404640464045).

The spelling of 4200200444021 in words is "four trillion, two hundred billion, two hundred million, four hundred forty-four thousand, twenty-one".