122320321 has 4 divisors (see below), whose sum is σ = 129515652. Its totient is φ = 115124992.

The previous prime is 122320283. The next prime is 122320379. The reversal of 122320321 is 123023221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123023221 = 31 ⋅3968491.

It can be written as a sum of positive squares in 2 ways, for example, as 65529025 + 56791296 = 8095^2 + 7536^2 .

It is a cyclic number.

It is not a de Polignac number, because 122320321 - 2¹³ = 122312129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122320295 and 122320304.

It is not an unprimeable number, because it can be changed into a prime (122320381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3597640 + ... + 3597673.

It is an arithmetic number, because the mean of its divisors is an integer number (32378913).

Almost surely, 2^122320321 is an apocalyptic number.

It is an amenable number.

122320321 is a deficient number, since it is larger than the sum of its proper divisors (7195331).

122320321 is an equidigital number, since it uses as much as digits as its factorization.

122320321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7195330.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 122320321 is about 11059.8517621169. The cubic root of 122320321 is about 496.4012548767.

Adding to 122320321 its reverse (123023221), we get a palindrome (245343542).

The spelling of 122320321 in words is "one hundred twenty-two million, three hundred twenty thousand, three hundred twenty-one".