121109747867 has 2 divisors, whose sum is σ = 121109747868. Its totient is φ = 121109747866.

The previous prime is 121109747861. The next prime is 121109747881. The reversal of 121109747867 is 768747901121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121109747867 - 2⁸ = 121109747611 is a prime.

It is a super-3 number, since 3×121109747867³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (121109747861) 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, 60554873933 + 60554873934.

It is an arithmetic number, because the mean of its divisors is an integer number (60554873934).

Almost surely, 2^121109747867 is an apocalyptic number.

121109747867 is a deficient number, since it is larger than the sum of its proper divisors (1).

121109747867 is an equidigital number, since it uses as much as digits as its factorization.

121109747867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1185408, while the sum is 53.

The spelling of 121109747867 in words is "one hundred twenty-one billion, one hundred nine million, seven hundred forty-seven thousand, eight hundred sixty-seven".