320122303221 has 24 divisors (see below), whose sum is σ = 505884468384. Its totient is φ = 179475572640.

The previous prime is 320122303213. The next prime is 320122303273. The reversal of 320122303221 is 122303221023.

It is a happy number.

It is not a de Polignac number, because 320122303221 - 2³ = 320122303213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320122302221) 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 23 ways as a sum of consecutive naturals, for example, 20536575 + ... + 20552156.

It is an arithmetic number, because the mean of its divisors is an integer number (21078519516).

Almost surely, 2^320122303221 is an apocalyptic number.

It is an amenable number.

320122303221 is a deficient number, since it is larger than the sum of its proper divisors (185762165163).

320122303221 is a wasteful number, since it uses less digits than its factorization.

320122303221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41088801 (or 41088794 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 320122303221 its reverse (122303221023), we get a palindrome (442425524244).

The spelling of 320122303221 in words is "three hundred twenty billion, one hundred twenty-two million, three hundred three thousand, two hundred twenty-one".