220353320321 has 2 divisors, whose sum is σ = 220353320322. Its totient is φ = 220353320320.

The previous prime is 220353320273. The next prime is 220353320351. The reversal of 220353320321 is 123023353022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194868390721 + 25484929600 = 441439^2 + 159640^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220353320321 is a prime.

It is not a weakly prime, because it can be changed into another prime (220353320351) 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 as a sum of consecutive naturals, namely, 110176660160 + 110176660161.

It is an arithmetic number, because the mean of its divisors is an integer number (110176660161).

Almost surely, 2^220353320321 is an apocalyptic number.

It is an amenable number.

220353320321 is a deficient number, since it is larger than the sum of its proper divisors (1).

220353320321 is an equidigital number, since it uses as much as digits as its factorization.

220353320321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 26.

Adding to 220353320321 its reverse (123023353022), we get a palindrome (343376673343).

The spelling of 220353320321 in words is "two hundred twenty billion, three hundred fifty-three million, three hundred twenty thousand, three hundred twenty-one".