20330221001 has 16 divisors (see below), whose sum is σ = 21736907280. Its totient is φ = 18947174400.

The previous prime is 20330220959. The next prime is 20330221013. The reversal of 20330221001 is 10012203302.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 3399006601 + 16931214400 = 58301^2 + 130120^2 .

It is a cyclic number.

It is not a de Polignac number, because 20330221001 - 2¹⁴ = 20330204617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20330221201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5188295 + ... + 5192211.

It is an arithmetic number, because the mean of its divisors is an integer number (1358556705).

Almost surely, 2^20330221001 is an apocalyptic number.

It is an amenable number.

20330221001 is a deficient number, since it is larger than the sum of its proper divisors (1406686279).

20330221001 is a wasteful number, since it uses less digits than its factorization.

20330221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6844.

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

Adding to 20330221001 its reverse (10012203302), we get a palindrome (30342424303).

The spelling of 20330221001 in words is "twenty billion, three hundred thirty million, two hundred twenty-one thousand, one".