20321021201 has 24 divisors (see below), whose sum is σ = 22802736960. Its totient is φ = 18079588800.

The previous prime is 20321021173. The next prime is 20321021221. The reversal of 20321021201 is 10212012302.

It is a happy number.

It is not a de Polignac number, because 20321021201 - 2⁶ = 20321021137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20321021221) 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 23 ways as a sum of consecutive naturals, for example, 3089246 + ... + 3095816.

It is an arithmetic number, because the mean of its divisors is an integer number (950114040).

Almost surely, 2^20321021201 is an apocalyptic number.

It is an amenable number.

20321021201 is a deficient number, since it is larger than the sum of its proper divisors (2481715759).

20321021201 is a wasteful number, since it uses less digits than its factorization.

20321021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7257 (or 7244 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20321021201 its reverse (10212012302), we get a palindrome (30533033503).

The spelling of 20321021201 in words is "twenty billion, three hundred twenty-one million, twenty-one thousand, two hundred one".