121340304989 has 2 divisors, whose sum is σ = 121340304990. Its totient is φ = 121340304988.

The previous prime is 121340304931. The next prime is 121340305033. The reversal of 121340304989 is 989403043121.

It is an a-pointer prime, because the next prime (121340305033) can be obtained adding 121340304989 to its sum of digits (44).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99824402500 + 21515902489 = 315950^2 + 146683^2 .

It is a cyclic number.

It is not a de Polignac number, because 121340304989 - 2²⁰ = 121339256413 is a prime.

It is a super-2 number, since 2×121340304989² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121340304929) 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, 60670152494 + 60670152495.

It is an arithmetic number, because the mean of its divisors is an integer number (60670152495).

Almost surely, 2^121340304989 is an apocalyptic number.

It is an amenable number.

121340304989 is a deficient number, since it is larger than the sum of its proper divisors (1).

121340304989 is an equidigital number, since it uses as much as digits as its factorization.

121340304989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 121340304989 in words is "one hundred twenty-one billion, three hundred forty million, three hundred four thousand, nine hundred eighty-nine".