121388323673 has 2 divisors, whose sum is σ = 121388323674. Its totient is φ = 121388323672.

The previous prime is 121388323643. The next prime is 121388323697. The reversal of 121388323673 is 376323883121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104130772249 + 17257551424 = 322693^2 + 131368^2 .

It is a cyclic number.

It is not a de Polignac number, because 121388323673 - 2¹⁴ = 121388307289 is a prime.

It is not a weakly prime, because it can be changed into another prime (121388323643) 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, 60694161836 + 60694161837.

It is an arithmetic number, because the mean of its divisors is an integer number (60694161837).

Almost surely, 2^121388323673 is an apocalyptic number.

It is an amenable number.

121388323673 is a deficient number, since it is larger than the sum of its proper divisors (1).

121388323673 is an equidigital number, since it uses as much as digits as its factorization.

121388323673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 47.

The spelling of 121388323673 in words is "one hundred twenty-one billion, three hundred eighty-eight million, three hundred twenty-three thousand, six hundred seventy-three".