121311230321 has 8 divisors (see below), whose sum is σ = 122321922120. Its totient is φ = 120302353408.

The previous prime is 121311230297. The next prime is 121311230333. The reversal of 121311230321 is 123032113121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 95209273600 + 26101956721 = 308560^2 + 161561^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121311230321 - 2²⁶ = 121244121457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121311230293 and 121311230302.

It is not an unprimeable number, because it can be changed into a prime (121311730321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319316 + ... + 587013.

It is an arithmetic number, because the mean of its divisors is an integer number (15290240265).

Almost surely, 2^121311230321 is an apocalyptic number.

It is an amenable number.

121311230321 is a deficient number, since it is larger than the sum of its proper divisors (1010691799).

121311230321 is an equidigital number, since it uses as much as digits as its factorization.

121311230321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907443.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 121311230321 its reverse (123032113121), we get a palindrome (244343343442).

The spelling of 121311230321 in words is "one hundred twenty-one billion, three hundred eleven million, two hundred thirty thousand, three hundred twenty-one".