320222201021 has 2 divisors, whose sum is σ = 320222201022. Its totient is φ = 320222201020.

The previous prime is 320222200967. The next prime is 320222201023. The reversal of 320222201021 is 120102222023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311626315225 + 8595885796 = 558235^2 + 92714^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320222201021 is a prime.

Together with 320222201023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320222201023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160111100510 + 160111100511.

It is an arithmetic number, because the mean of its divisors is an integer number (160111100511).

Almost surely, 2^320222201021 is an apocalyptic number.

It is an amenable number.

320222201021 is a deficient number, since it is larger than the sum of its proper divisors (1).

320222201021 is an equidigital number, since it uses as much as digits as its factorization.

320222201021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 320222201021 its reverse (120102222023), we get a palindrome (440324423044).

The spelling of 320222201021 in words is "three hundred twenty billion, two hundred twenty-two million, two hundred one thousand, twenty-one".