121000111322789 has 2 divisors, whose sum is σ = 121000111322790. Its totient is φ = 121000111322788.

The previous prime is 121000111322743. The next prime is 121000111322861. The reversal of 121000111322789 is 987223111000121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82723208752900 + 38276902569889 = 9095230^2 + 6186833^2 .

It is a cyclic number.

It is not a de Polignac number, because 121000111322789 - 2³⁶ = 120931391846053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121000111322989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500055661394 + 60500055661395.

It is an arithmetic number, because the mean of its divisors is an integer number (60500055661395).

Almost surely, 2^{121000111322789} is an apocalyptic number.

It is an amenable number.

121000111322789 is a deficient number, since it is larger than the sum of its proper divisors (1).

121000111322789 is an equidigital number, since it uses as much as digits as its factorization.

121000111322789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 38.

The spelling of 121000111322789 in words is "one hundred twenty-one trillion, one hundred eleven million, three hundred twenty-two thousand, seven hundred eighty-nine".