121423324129 has 2 divisors, whose sum is σ = 121423324130. Its totient is φ = 121423324128.

The previous prime is 121423324097. The next prime is 121423324151. The reversal of 121423324129 is 921423324121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70358623504 + 51064700625 = 265252^2 + 225975^2 .

It is an emirp because it is prime and its reverse (921423324121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121423324129 - 2⁵ = 121423324097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121423324094 and 121423324103.

It is not a weakly prime, because it can be changed into another prime (121423324199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60711662064 + 60711662065.

It is an arithmetic number, because the mean of its divisors is an integer number (60711662065).

Almost surely, 2^121423324129 is an apocalyptic number.

It is an amenable number.

121423324129 is a deficient number, since it is larger than the sum of its proper divisors (1).

121423324129 is an equidigital number, since it uses as much as digits as its factorization.

121423324129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The spelling of 121423324129 in words is "one hundred twenty-one billion, four hundred twenty-three million, three hundred twenty-four thousand, one hundred twenty-nine".