200031320221 has 4 divisors (see below), whose sum is σ = 202011828444. Its totient is φ = 198050812000.

The previous prime is 200031320219. The next prime is 200031320297. The reversal of 200031320221 is 122023130002.

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 168884012025 + 31147308196 = 410955^2 + 176486^2 .

It is a cyclic number.

It is not a de Polignac number, because 200031320221 - 2¹ = 200031320219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200031320195 and 200031320204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200031320821) 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, 990253960 + ... + 990254161.

It is an arithmetic number, because the mean of its divisors is an integer number (50502957111).

Almost surely, 2^200031320221 is an apocalyptic number.

It is an amenable number.

200031320221 is a deficient number, since it is larger than the sum of its proper divisors (1980508223).

200031320221 is a wasteful number, since it uses less digits than its factorization.

200031320221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980508222.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 200031320221 its reverse (122023130002), we get a palindrome (322054450223).

The spelling of 200031320221 in words is "two hundred billion, thirty-one million, three hundred twenty thousand, two hundred twenty-one".