4200320430221 has 4 divisors (see below), whose sum is σ = 4200325384092. Its totient is φ = 4200315476352.

The previous prime is 4200320430211. The next prime is 4200320430233. The reversal of 4200320430221 is 1220340230024.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2875839388900 + 1324481041321 = 1695830^2 + 1150861^2 .

It is a cyclic number.

It is not a de Polignac number, because 4200320430221 - 2¹⁰ = 4200320429197 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 (4200320430211) 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, 848036 + ... + 3019901.

It is an arithmetic number, because the mean of its divisors is an integer number (1050081346023).

Almost surely, 2^{4200320430221} is an apocalyptic number.

It is an amenable number.

4200320430221 is a deficient number, since it is larger than the sum of its proper divisors (4953871).

4200320430221 is a wasteful number, since it uses less digits than its factorization.

4200320430221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4953870.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 4200320430221 its reverse (1220340230024), we get a palindrome (5420660660245).

The spelling of 4200320430221 in words is "four trillion, two hundred billion, three hundred twenty million, four hundred thirty thousand, two hundred twenty-one".