121698130589 has 4 divisors (see below), whose sum is σ = 139083577824. Its totient is φ = 104312683356.

The previous prime is 121698130577. The next prime is 121698130601. The reversal of 121698130589 is 985031896121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (121698130577) and next prime (121698130601).

It is a de Polignac number, because none of the positive numbers 2^k-121698130589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121698130589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121698130789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8692723607 + ... + 8692723620.

It is an arithmetic number, because the mean of its divisors is an integer number (34770894456).

Almost surely, 2^121698130589 is an apocalyptic number.

It is an amenable number.

121698130589 is a deficient number, since it is larger than the sum of its proper divisors (17385447235).

121698130589 is an equidigital number, since it uses as much as digits as its factorization.

121698130589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17385447234.

The product of its (nonzero) digits is 933120, while the sum is 53.

The spelling of 121698130589 in words is "one hundred twenty-one billion, six hundred ninety-eight million, one hundred thirty thousand, five hundred eighty-nine".