20110330221 has 4 divisors (see below), whose sum is σ = 26813773632. Its totient is φ = 13406886812.

The previous prime is 20110330211. The next prime is 20110330231. The reversal of 20110330221 is 12203301102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (20110330211) and next prime (20110330231).

It is a cyclic number.

It is not a de Polignac number, because 20110330221 - 2¹⁵ = 20110297453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20110330221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110330211) 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 3 ways as a sum of consecutive naturals, for example, 3351721701 + ... + 3351721706.

It is an arithmetic number, because the mean of its divisors is an integer number (6703443408).

Almost surely, 2^20110330221 is an apocalyptic number.

It is an amenable number.

20110330221 is a deficient number, since it is larger than the sum of its proper divisors (6703443411).

20110330221 is an equidigital number, since it uses as much as digits as its factorization.

20110330221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6703443410.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20110330221 its reverse (12203301102), we get a palindrome (32313631323).

The spelling of 20110330221 in words is "twenty billion, one hundred ten million, three hundred thirty thousand, two hundred twenty-one".