121324513 has 2 divisors, whose sum is σ = 121324514. Its totient is φ = 121324512.

The previous prime is 121324501. The next prime is 121324523. The reversal of 121324513 is 315423121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68442529 + 52881984 = 8273^2 + 7272^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121324513 is a prime.

It is not a weakly prime, because it can be changed into another prime (121324523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60662256 + 60662257.

It is an arithmetic number, because the mean of its divisors is an integer number (60662257).

Almost surely, 2^121324513 is an apocalyptic number.

It is an amenable number.

121324513 is a deficient number, since it is larger than the sum of its proper divisors (1).

121324513 is an equidigital number, since it uses as much as digits as its factorization.

121324513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 22.

The square root of 121324513 is about 11014.7407141521. The cubic root of 121324513 is about 495.0505175800.

Adding to 121324513 its reverse (315423121), we get a palindrome (436747634).

The spelling of 121324513 in words is "one hundred twenty-one million, three hundred twenty-four thousand, five hundred thirteen".