20522230321 has 8 divisors (see below), whose sum is σ = 20786220000. Its totient is φ = 20258639232.

The previous prime is 20522230307. The next prime is 20522230343. The reversal of 20522230321 is 12303222502.

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-20522230321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20522230292 and 20522230301.

It is not an unprimeable number, because it can be changed into a prime (20522230921) 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, 4686 + ... + 202648.

It is an arithmetic number, because the mean of its divisors is an integer number (2598277500).

Almost surely, 2^20522230321 is an apocalyptic number.

It is an amenable number.

20522230321 is a deficient number, since it is larger than the sum of its proper divisors (263989679).

20522230321 is a wasteful number, since it uses less digits than its factorization.

20522230321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199295.

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 20522230321 its reverse (12303222502), we get a palindrome (32825452823).

The spelling of 20522230321 in words is "twenty billion, five hundred twenty-two million, two hundred thirty thousand, three hundred twenty-one".