320122123221 has 16 divisors (see below), whose sum is σ = 432373593600. Its totient is φ = 210651015168.

The previous prime is 320122123171. The next prime is 320122123253. The reversal of 320122123221 is 122321221023.

It is not a de Polignac number, because 320122123221 - 2⁷ = 320122123093 is a prime.

It is a super-2 number, since 2×320122123221² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320122123291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 884901 + ... + 1193018.

It is an arithmetic number, because the mean of its divisors is an integer number (27023349600).

Almost surely, 2^320122123221 is an apocalyptic number.

It is an amenable number.

320122123221 is a deficient number, since it is larger than the sum of its proper divisors (112251470379).

320122123221 is a wasteful number, since it uses less digits than its factorization.

320122123221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2078588.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 320122123221 its reverse (122321221023), we get a palindrome (442443344244).

The spelling of 320122123221 in words is "three hundred twenty billion, one hundred twenty-two million, one hundred twenty-three thousand, two hundred twenty-one".