20020022221 has 8 divisors (see below), whose sum is σ = 20289467520. Its totient is φ = 19751249472.

The previous prime is 20020022219. The next prime is 20020022233. The reversal of 20020022221 is 12222002002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20020022221 - 2¹ = 20020022219 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 (20020022251) 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 7 ways as a sum of consecutive naturals, for example, 108060 + ... + 227413.

It is an arithmetic number, because the mean of its divisors is an integer number (2536183440).

Almost surely, 2^20020022221 is an apocalyptic number.

It is an amenable number.

20020022221 is a deficient number, since it is larger than the sum of its proper divisors (269445299).

20020022221 is an equidigital number, since it uses as much as digits as its factorization.

20020022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336275.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20020022221 its reverse (12222002002), we get a palindrome (32242024223).

The spelling of 20020022221 in words is "twenty billion, twenty million, twenty-two thousand, two hundred twenty-one".