121101116779 has 2 divisors, whose sum is σ = 121101116780. Its totient is φ = 121101116778.

The previous prime is 121101116729. The next prime is 121101116797. The reversal of 121101116779 is 977611101121.

Together with next prime (121101116797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121101116779 - 2⁹ = 121101116267 is a prime.

It is not a weakly prime, because it can be changed into another prime (121101116729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60550558389 + 60550558390.

It is an arithmetic number, because the mean of its divisors is an integer number (60550558390).

Almost surely, 2^121101116779 is an apocalyptic number.

121101116779 is a deficient number, since it is larger than the sum of its proper divisors (1).

121101116779 is an equidigital number, since it uses as much as digits as its factorization.

121101116779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 37.

The spelling of 121101116779 in words is "one hundred twenty-one billion, one hundred one million, one hundred sixteen thousand, seven hundred seventy-nine".