121312011103321 has 2 divisors, whose sum is σ = 121312011103322. Its totient is φ = 121312011103320.

The previous prime is 121312011103307. The next prime is 121312011103357. The reversal of 121312011103321 is 123301110213121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106115463127696 + 15196547975625 = 10301236^2 + 3898275^2 .

It is a cyclic number.

It is not a de Polignac number, because 121312011103321 - 2⁵ = 121312011103289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121312011103292 and 121312011103301.

It is not a weakly prime, because it can be changed into another prime (121312011103391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60656005551660 + 60656005551661.

It is an arithmetic number, because the mean of its divisors is an integer number (60656005551661).

Almost surely, 2^{121312011103321} is an apocalyptic number.

It is an amenable number.

121312011103321 is a deficient number, since it is larger than the sum of its proper divisors (1).

121312011103321 is an equidigital number, since it uses as much as digits as its factorization.

121312011103321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 121312011103321 its reverse (123301110213121), we get a palindrome (244613121316442).

The spelling of 121312011103321 in words is "one hundred twenty-one trillion, three hundred twelve billion, eleven million, one hundred three thousand, three hundred twenty-one".