121224317 has 2 divisors, whose sum is σ = 121224318. Its totient is φ = 121224316.

The previous prime is 121224289. The next prime is 121224343. The reversal of 121224317 is 713422121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80532676 + 40691641 = 8974^2 + 6379^2 .

It is a cyclic number.

It is not a de Polignac number, because 121224317 - 2¹⁸ = 120962173 is a prime.

It is a super-3 number, since 3×121224317³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 121224292 and 121224301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121224377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60612158 + 60612159.

It is an arithmetic number, because the mean of its divisors is an integer number (60612159).

Almost surely, 2^121224317 is an apocalyptic number.

It is an amenable number.

121224317 is a deficient number, since it is larger than the sum of its proper divisors (1).

121224317 is an equidigital number, since it uses as much as digits as its factorization.

121224317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 23.

The square root of 121224317 is about 11010.1915060547. The cubic root of 121224317 is about 494.9142006853.

Adding to 121224317 its reverse (713422121), we get a palindrome (834646438).

The spelling of 121224317 in words is "one hundred twenty-one million, two hundred twenty-four thousand, three hundred seventeen".