121223304529 has 2 divisors, whose sum is σ = 121223304530. Its totient is φ = 121223304528.

The previous prime is 121223304509. The next prime is 121223304593. The reversal of 121223304529 is 925403322121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120339610000 + 883694529 = 346900^2 + 29727^2 .

It is an emirp because it is prime and its reverse (925403322121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121223304529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121223304494 and 121223304503.

It is not a weakly prime, because it can be changed into another prime (121223304509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60611652264 + 60611652265.

It is an arithmetic number, because the mean of its divisors is an integer number (60611652265).

Almost surely, 2^121223304529 is an apocalyptic number.

It is an amenable number.

121223304529 is a deficient number, since it is larger than the sum of its proper divisors (1).

121223304529 is an equidigital number, since it uses as much as digits as its factorization.

121223304529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 121223304529 in words is "one hundred twenty-one billion, two hundred twenty-three million, three hundred four thousand, five hundred twenty-nine".