121224500513 has 2 divisors, whose sum is σ = 121224500514. Its totient is φ = 121224500512.

The previous prime is 121224500497. The next prime is 121224500563. The reversal of 121224500513 is 315005422121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120875819584 + 348680929 = 347672^2 + 18673^2 .

It is a cyclic number.

It is not a de Polignac number, because 121224500513 - 2⁴ = 121224500497 is a prime.

It is not a weakly prime, because it can be changed into another prime (121224500563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60612250256 + 60612250257.

It is an arithmetic number, because the mean of its divisors is an integer number (60612250257).

Almost surely, 2^121224500513 is an apocalyptic number.

It is an amenable number.

121224500513 is a deficient number, since it is larger than the sum of its proper divisors (1).

121224500513 is an equidigital number, since it uses as much as digits as its factorization.

121224500513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 121224500513 its reverse (315005422121), we get a palindrome (436229922634).

The spelling of 121224500513 in words is "one hundred twenty-one billion, two hundred twenty-four million, five hundred thousand, five hundred thirteen".