122130321 has 4 divisors (see below), whose sum is σ = 162840432. Its totient is φ = 81420212.

The previous prime is 122130289. The next prime is 122130343. The reversal of 122130321 is 123031221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122130321 - 2⁵ = 122130289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122130321.

It is not an unprimeable number, because it can be changed into a prime (122130361) 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, 20355051 + ... + 20355056.

It is an arithmetic number, because the mean of its divisors is an integer number (40710108).

Almost surely, 2^122130321 is an apocalyptic number.

It is an amenable number.

122130321 is a deficient number, since it is larger than the sum of its proper divisors (40710111).

122130321 is an equidigital number, since it uses as much as digits as its factorization.

122130321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40710110.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 122130321 is about 11051.2587970783. The cubic root of 122130321 is about 496.1441018717.

Adding to 122130321 its reverse (123031221), we get a palindrome (245161542).

The spelling of 122130321 in words is "one hundred twenty-two million, one hundred thirty thousand, three hundred twenty-one".