121967500073 has 2 divisors, whose sum is σ = 121967500074. Its totient is φ = 121967500072.

The previous prime is 121967500037. The next prime is 121967500133. The reversal of 121967500073 is 370005769121.

Together with previous prime (121967500037) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86340182569 + 35627317504 = 293837^2 + 188752^2 .

It is a cyclic number.

It is not a de Polignac number, because 121967500073 - 2¹⁴ = 121967483689 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121967500073.

It is not a weakly prime, because it can be changed into another prime (121967500273) 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, 60983750036 + 60983750037.

It is an arithmetic number, because the mean of its divisors is an integer number (60983750037).

Almost surely, 2^121967500073 is an apocalyptic number.

It is an amenable number.

121967500073 is a deficient number, since it is larger than the sum of its proper divisors (1).

121967500073 is an equidigital number, since it uses as much as digits as its factorization.

121967500073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79380, while the sum is 41.

The spelling of 121967500073 in words is "one hundred twenty-one billion, nine hundred sixty-seven million, five hundred thousand, seventy-three".