121336784893 has 2 divisors, whose sum is σ = 121336784894. Its totient is φ = 121336784892.

The previous prime is 121336784819. The next prime is 121336784977. The reversal of 121336784893 is 398487633121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121185445689 + 151339204 = 348117^2 + 12302^2 .

It is a cyclic number.

It is not a de Polignac number, because 121336784893 - 2⁹ = 121336784381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121336784293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60668392446 + 60668392447.

It is an arithmetic number, because the mean of its divisors is an integer number (60668392447).

Almost surely, 2^121336784893 is an apocalyptic number.

It is an amenable number.

121336784893 is a deficient number, since it is larger than the sum of its proper divisors (1).

121336784893 is an equidigital number, since it uses as much as digits as its factorization.

121336784893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 55.

The spelling of 121336784893 in words is "one hundred twenty-one billion, three hundred thirty-six million, seven hundred eighty-four thousand, eight hundred ninety-three".