122321312121 has 4 divisors (see below), whose sum is σ = 163095082832. Its totient is φ = 81547541412.

The previous prime is 122321312119. The next prime is 122321312129. The reversal of 122321312121 is 121213123221.

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 not a de Polignac number, because 122321312121 - 2¹ = 122321312119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122321312129) 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, 20386885351 + ... + 20386885356.

It is an arithmetic number, because the mean of its divisors is an integer number (40773770708).

Almost surely, 2^122321312121 is an apocalyptic number.

It is an amenable number.

122321312121 is a deficient number, since it is larger than the sum of its proper divisors (40773770711).

122321312121 is an equidigital number, since it uses as much as digits as its factorization.

122321312121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40773770710.

The product of its digits is 288, while the sum is 21.

Adding to 122321312121 its reverse (121213123221), we get a palindrome (243534435342).

The spelling of 122321312121 in words is "one hundred twenty-two billion, three hundred twenty-one million, three hundred twelve thousand, one hundred twenty-one".