20031300221 has 8 divisors (see below), whose sum is σ = 21322497600. Its totient is φ = 18763794720.

The previous prime is 20031300173. The next prime is 20031300257. The reversal of 20031300221 is 12200313002.

It is a happy number.

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-20031300221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20031300196 and 20031300205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20031300281) 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, 5921225 + ... + 5924606.

It is an arithmetic number, because the mean of its divisors is an integer number (2665312200).

Almost surely, 2^20031300221 is an apocalyptic number.

It is an amenable number.

20031300221 is a deficient number, since it is larger than the sum of its proper divisors (1291197379).

20031300221 is a wasteful number, since it uses less digits than its factorization.

20031300221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11845939.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20031300221 its reverse (12200313002), we get a palindrome (32231613223).

The spelling of 20031300221 in words is "twenty billion, thirty-one million, three hundred thousand, two hundred twenty-one".