121244129 has 2 divisors, whose sum is σ = 121244130. Its totient is φ = 121244128.

The previous prime is 121244087. The next prime is 121244143. The reversal of 121244129 is 921442121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117765904 + 3478225 = 10852^2 + 1865^2 .

It is a cyclic number.

It is not a de Polignac number, because 121244129 - 2⁸ = 121243873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121244098 and 121244107.

It is not a weakly prime, because it can be changed into another prime (121244029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60622064 + 60622065.

It is an arithmetic number, because the mean of its divisors is an integer number (60622065).

Almost surely, 2^121244129 is an apocalyptic number.

It is an amenable number.

121244129 is a deficient number, since it is larger than the sum of its proper divisors (1).

121244129 is an equidigital number, since it uses as much as digits as its factorization.

121244129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 26.

The square root of 121244129 is about 11011.0911811682. The cubic root of 121244129 is about 494.9411609143.

The spelling of 121244129 in words is "one hundred twenty-one million, two hundred forty-four thousand, one hundred twenty-nine".