121303321 has 2 divisors, whose sum is σ = 121303322. Its totient is φ = 121303320.

The previous prime is 121303307. The next prime is 121303327. The reversal of 121303321 is 123303121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95942025 + 25361296 = 9795^2 + 5036^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121303321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121303295 and 121303304.

It is not a weakly prime, because it can be changed into another prime (121303327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60651660 + 60651661.

It is an arithmetic number, because the mean of its divisors is an integer number (60651661).

Almost surely, 2^121303321 is an apocalyptic number.

It is an amenable number.

121303321 is a deficient number, since it is larger than the sum of its proper divisors (1).

121303321 is an equidigital number, since it uses as much as digits as its factorization.

121303321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 121303321 is about 11013.7786885337. The cubic root of 121303321 is about 495.0216920739.

Adding to 121303321 its reverse (123303121), we get a palindrome (244606442).

It can be divided in two parts, 12130 and 3321, that added together give a palindrome (15451).

The spelling of 121303321 in words is "one hundred twenty-one million, three hundred three thousand, three hundred twenty-one".