320002220331121 has 2 divisors, whose sum is σ = 320002220331122. Its totient is φ = 320002220331120.

The previous prime is 320002220331107. The next prime is 320002220331149. The reversal of 320002220331121 is 121133022200023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 292360241117025 + 27641979214096 = 17098545^2 + 5257564^2 .

It is a cyclic number.

It is not a de Polignac number, because 320002220331121 - 2³¹ = 320000072847473 is a prime.

It is a super-2 number, since 2×320002220331121² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320002220331092 and 320002220331101.

It is not a weakly prime, because it can be changed into another prime (320002220331151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160001110165560 + 160001110165561.

It is an arithmetic number, because the mean of its divisors is an integer number (160001110165561).

Almost surely, 2^{320002220331121} is an apocalyptic number.

It is an amenable number.

320002220331121 is a deficient number, since it is larger than the sum of its proper divisors (1).

320002220331121 is an equidigital number, since it uses as much as digits as its factorization.

320002220331121 is an evil number, because the sum of its binary digits is even.

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

Adding to 320002220331121 its reverse (121133022200023), we get a palindrome (441135242531144).

The spelling of 320002220331121 in words is "three hundred twenty trillion, two billion, two hundred twenty million, three hundred thirty-one thousand, one hundred twenty-one".