121340112989 has 2 divisors, whose sum is σ = 121340112990. Its totient is φ = 121340112988.

The previous prime is 121340112977. The next prime is 121340112997. The reversal of 121340112989 is 989211043121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64676119225 + 56663993764 = 254315^2 + 238042^2 .

It is a cyclic number.

It is not a de Polignac number, because 121340112989 - 2²⁴ = 121323335773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121340118989) 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, 60670056494 + 60670056495.

It is an arithmetic number, because the mean of its divisors is an integer number (60670056495).

Almost surely, 2^121340112989 is an apocalyptic number.

It is an amenable number.

121340112989 is a deficient number, since it is larger than the sum of its proper divisors (1).

121340112989 is an equidigital number, since it uses as much as digits as its factorization.

121340112989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 41.

The spelling of 121340112989 in words is "one hundred twenty-one billion, three hundred forty million, one hundred twelve thousand, nine hundred eighty-nine".