20330221220311 has 4 divisors (see below), whose sum is σ = 20587565792800. Its totient is φ = 20072876647824.

The previous prime is 20330221220279. The next prime is 20330221220321. The reversal of 20330221220311 is 11302212203302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20330221220311 - 2⁵ = 20330221220279 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 (20330221220321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128672286126 + ... + 128672286283.

It is an arithmetic number, because the mean of its divisors is an integer number (5146891448200).

Almost surely, 2^{20330221220311} is an apocalyptic number.

20330221220311 is a deficient number, since it is larger than the sum of its proper divisors (257344572489).

20330221220311 is an equidigital number, since it uses as much as digits as its factorization.

20330221220311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257344572488.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 20330221220311 its reverse (11302212203302), we get a palindrome (31632433423613).

The spelling of 20330221220311 in words is "twenty trillion, three hundred thirty billion, two hundred twenty-one million, two hundred twenty thousand, three hundred eleven".