121222110331321 has 4 divisors (see below), whose sum is σ = 121360333947172. Its totient is φ = 121083886715472.

The previous prime is 121222110331303. The next prime is 121222110331337. The reversal of 121222110331321 is 123133011222121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42511234564096 + 78710875767225 = 6520064^2 + 8871915^2 .

It is a cyclic number.

It is not a de Polignac number, because 121222110331321 - 2⁷ = 121222110331193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121222110331351) 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, 69111806610 + ... + 69111808363.

It is an arithmetic number, because the mean of its divisors is an integer number (30340083486793).

Almost surely, 2^{121222110331321} is an apocalyptic number.

It is an amenable number.

121222110331321 is a deficient number, since it is larger than the sum of its proper divisors (138223615851).

121222110331321 is an equidigital number, since it uses as much as digits as its factorization.

121222110331321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138223615850.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 121222110331321 its reverse (123133011222121), we get a palindrome (244355121553442).

The spelling of 121222110331321 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred ten million, three hundred thirty-one thousand, three hundred twenty-one".