20302210221 has 16 divisors (see below), whose sum is σ = 27690000384. Its totient is φ = 13227795504.

The previous prime is 20302210199. The next prime is 20302210249. The reversal of 20302210221 is 12201220302.

It is a happy number.

It is not a de Polignac number, because 20302210221 - 2¹³ = 20302202029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20302210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302210261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372135 + ... + 423188.

It is an arithmetic number, because the mean of its divisors is an integer number (1730625024).

Almost surely, 2^20302210221 is an apocalyptic number.

It is an amenable number.

20302210221 is a deficient number, since it is larger than the sum of its proper divisors (7387790163).

20302210221 is a wasteful number, since it uses less digits than its factorization.

20302210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795520.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20302210221 its reverse (12201220302), we get a palindrome (32503430523).

The spelling of 20302210221 in words is "twenty billion, three hundred two million, two hundred ten thousand, two hundred twenty-one".